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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM32100B_EVAL/stm32100b_eval_cec.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM32100B_EVAL/stm32100b_eval_cec.c | 1722 |
1 files changed, 1722 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM32100B_EVAL/stm32100b_eval_cec.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM32100B_EVAL/stm32100b_eval_cec.c new file mode 100644 index 0000000..3172b63 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM32100B_EVAL/stm32100b_eval_cec.c @@ -0,0 +1,1722 @@ +/** + ****************************************************************************** + * @file stm32100b_eval_cec.c + * @author MCD Application Team + * @version V4.5.0 + * @date 07-March-2011 + * @brief This file provides all the STM32100B-EVAL HDMI-CEC firmware functions. + ****************************************************************************** + * @attention + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32100b_eval_cec.h" + +/** @addtogroup Utilities + * @{ + */ + +/** @addtogroup STM32_EVAL + * @{ + */ + +/** @addtogroup STM32100B_EVAL + * @{ + */ + +/** @defgroup STM32100B_EVAL_CEC + * @brief This file includes the CEC Stack driver for HDMI-CEC Module + * of STM32100B-EVAL board. + * @{ + */ + +/** @defgroup STM32100B_EVAL_CEC_Private_Types + * @{ + */ + +/** + * @} + */ + +/** @defgroup STM32100B_EVAL_CEC_Private_Defines + * @{ + */ + + +/** + * @} + */ + +/** @defgroup STM32100B_EVAL_CEC_Private_Macros + * @{ + */ +/** + * @} + */ + +/** @defgroup STM32100B_EVAL_CEC_Private_Variables + * @{ + */ + +__IO uint32_t ReceivedFrame = 0; +__IO uint32_t SendFrame = 0; +__IO uint32_t BufferCount = 0, TxCounter = 0, RxCounter = 0; +__IO uint8_t BufferPointer[15]; +__IO uint32_t ReceiveStatus = 0; +__IO uint32_t SendStatus = 0; +__IO uint8_t TransErrorCode = 0; +__IO uint8_t RecepErrorCode = 0; +__IO uint8_t MyLogicalAddress = 0; +__IO uint16_t MyPhysicalAddress = 0; +__IO uint8_t DeviceType = 0; +#ifdef HDMI_CEC_USE_DDC +__IO uint8_t pBuffer[256]; +__IO uint16_t NumByteToRead = 255; +#endif +__IO uint8_t CECDevicesNumber = 0; + +HDMI_CEC_Message HDMI_CEC_TX_MessageStructPrivate; +HDMI_CEC_Message HDMI_CEC_RX_MessageStructPrivate; +HDMI_CEC_Message HDMI_CEC_TX_MessageStructure; + +__IO uint8_t FeatureOpcode = 0; +__IO uint8_t AbortReason = 0; +__IO uint8_t DeviceCount = 0; + +HDMI_CEC_Map HDMI_CEC_MapStruct; +HDMI_CEC_Map HDMI_CEC_DeviceMap[14]; + +/* CEC follower addresses */ +uint8_t* HDMI_CEC_Follower_String[13][2] = + { + {(uint8_t *)" TV ", (uint8_t *)"0"}, + {(uint8_t *)"Recording Device 1 ", (uint8_t *)"0"}, + {(uint8_t *)"Recording Device 2 ", (uint8_t *)"0"}, + {(uint8_t *)" Tuner 1 ", (uint8_t *)"0"}, + {(uint8_t *)" Playback Device 1 ", (uint8_t *)"0"}, + {(uint8_t *)" Audio System ", (uint8_t *)"0"}, + {(uint8_t *)" Tuner 2 ", (uint8_t *)"0"}, + {(uint8_t *)" Tuner 3 ", (uint8_t *)"0"}, + {(uint8_t *)" Playback Device 2 ", (uint8_t *)"0"}, + {(uint8_t *)"Recording Device 3 ", (uint8_t *)"0"}, + {(uint8_t *)" Tuner 4 ", (uint8_t *)"0"}, + {(uint8_t *)" Playback Device 3 ", (uint8_t *)"0"}, + {(uint8_t *)" Broadcast ", (uint8_t *)"1"} + }; + +/** + * @} + */ + + +/** @defgroup STM32100B_EVAL_CEC_Private_Function_Prototypes + * @{ + */ +static HDMI_CEC_Error PhysicalAddressDiscovery(void); +static HDMI_CEC_Error LogicalAddressAllocation(void); + + +/** + * @} + */ + + +/** @defgroup STM32100B_EVAL_CEC_Private_Functions + * @{ + */ + +/** + * @brief Initializes the HDMI CEC. + * @param None + * @retval HDMI_CEC_Error: CEC Error code + */ +HDMI_CEC_Error HDMI_CEC_Init(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + CEC_InitTypeDef CEC_InitStructure; + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + uint8_t sendcount = 0; + +#ifdef HDMI_CEC_USE_DDC + I2C_InitTypeDef I2C_InitStructure; + /* Enable CEC_I2C clocks */ + RCC_APB1PeriphClockCmd(HDMI_CEC_I2C_CLK, ENABLE); + + /* Enable CEC_I2C_GPIO and CEC_HPD_GPIO clocks */ + RCC_APB2PeriphClockCmd(HDMI_CEC_I2C_GPIO_CLK | HDMI_CEC_HPD_GPIO_CLK, ENABLE); +#endif + + /* Enable CEC clocks */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC, ENABLE); + + /* Enable CEC_LINE_GPIO clocks */ + RCC_APB2PeriphClockCmd(HDMI_CEC_LINE_GPIO_CLK, ENABLE); + + /* Configure CEC_LINE_GPIO as Output open drain */ + GPIO_InitStructure.GPIO_Pin = HDMI_CEC_LINE_PIN; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; + GPIO_Init(HDMI_CEC_LINE_GPIO_PORT, &GPIO_InitStructure); + +#ifdef HDMI_CEC_USE_DDC + /* Configure CEC_I2C_SCL_PIN and CEC_I2C_SDA_PIN as Output open drain */ + GPIO_InitStructure.GPIO_Pin = HDMI_CEC_I2C_SCL_PIN | HDMI_CEC_I2C_SDA_PIN; + GPIO_Init(HDMI_CEC_I2C_GPIO_PORT, &GPIO_InitStructure); + +/* This configuration is only when the HDMI CEC is configured as source. + The HDMI source has to provide the +5V Power signal to the sink. + On STM32100B-EVAL borad, you have to solder the SB4 Solder bridge. + Then, the source will wait for HPD signal to be asserted from the sink. + Once the HPD signal is detected the source shall read the EDID structure + throuhgh the DDC channel. */ + /* Configure CEC_HPD_GPIO as Input pull down */ + GPIO_InitStructure.GPIO_Pin = HDMI_CEC_HPD_PIN; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; + GPIO_Init(HDMI_CEC_HPD_GPIO_PORT, &GPIO_InitStructure); + + +/* This configuration is only when the HDMI CEC is configured as sink. + The HDMI sink has to wait for the +5V Power signal from the source. + On STM32100B-EVAL borad, SB4 Solder bridge should be open (default configuration). + Then, the sink will assert the HPD signal to inform the source that the EDID + is ready for read through DDC channel. In this implementation, the EDID structure + is not implemented. */ +/* GPIO_InitStructure.GPIO_Pin = HDMI_CEC_HPD_PIN; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; + GPIO_Init(HDMI_CEC_HPD_GPIO_PORT, &GPIO_InitStructure); + + HDMI_CEC_HPD_HIGH(); // Set the Hot plug detect signal */ + + /* Enable CEC_I2C */ + I2C_Cmd(HDMI_CEC_I2C, ENABLE); + + /* I2C configuration */ + I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; + I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; + I2C_InitStructure.I2C_OwnAddress1 = HDMI_CEC_I2C_SLAVE_ADDRESS7; + I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; + I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; + I2C_InitStructure.I2C_ClockSpeed = HDMI_CEC_I2C_CLOCK_SPEED; + I2C_Init(HDMI_CEC_I2C, &I2C_InitStructure); +#endif + + /* Physical Address discovery */ + errorstatus = PhysicalAddressDiscovery(); + + if (errorstatus != HDMI_CEC_OK) + { + /* Device not connected (Physical Address lost) */ + return(errorstatus); + } + + + /* CEC DeInit */ + CEC_DeInit(); + + /* Configure CEC */ + CEC_InitStructure.CEC_BitTimingMode = CEC_BitTimingStdMode; + CEC_InitStructure.CEC_BitPeriodMode = CEC_BitPeriodStdMode; + CEC_Init(&CEC_InitStructure); + + /* Set Prescaler value for APB1 clock = 24MHz */ + CEC_SetPrescaler(0x4AF); + + /* Enable CEC */ + CEC_Cmd(ENABLE); + + /* Logical Address Allocation */ + sendcount = 0; + errorstatus = LogicalAddressAllocation(); + + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = LogicalAddressAllocation(); + } + + if (errorstatus != HDMI_CEC_OK) + { + /* Device Unregistred */ + return(errorstatus); + } + + HDMI_CEC_CheckConnectedDevices(); + + /* Set the CEC initiator address */ + CEC_OwnAddressConfig(MyLogicalAddress); + + /* Activate CEC interrupts associated to the set of RBTF,RERR, TBTF, TERR flags */ + CEC_ITConfig(ENABLE); + + /* Report physical address*/ + errorstatus = HDMI_CEC_ReportPhysicalAddress(); + sendcount = 0; + + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = HDMI_CEC_ReportPhysicalAddress(); + } + + if (errorstatus != HDMI_CEC_OK) + { + /* Device Unregistred */ + return(errorstatus); + } + + return errorstatus; +} + +/** + * @brief Transmit message by taking data from typedef struct CEC_Meassage + * @param CEC_TX_MessageStructure: pointer to an CEC_Message structure that contains + * the message to be sent. + * @retval HDMI_CEC_Error: CEC Error code + */ +HDMI_CEC_Error HDMI_CEC_TransmitMessage(HDMI_CEC_Message *HDMI_CEC_TX_MessageStructure) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + __IO uint32_t count = 0, j = 0; + + SendFrame = 0; + SendStatus = 0; + TxCounter = 0; + BufferCount = 0; + + HDMI_CEC_TX_MessageStructPrivate = *HDMI_CEC_TX_MessageStructure; + + /* Initialize BufferPointer */ + for (j = 0; j < 15; j++) + { + BufferPointer[j] = 0; + } + + BufferPointer[0] = HDMI_CEC_TX_MessageStructPrivate.Opcode; + + for (BufferCount = 1; BufferCount < HDMI_CEC_TX_MessageStructPrivate.TxMessageLength + 1; BufferCount++) + { + BufferPointer[BufferCount] = HDMI_CEC_TX_MessageStructPrivate.Operande[BufferCount-1]; + } + + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + /* Write single Data in the TX Buffer to Transmit through the CEC peripheral */ + CEC_SendDataByte(HDMI_CEC_TX_MessageStructPrivate.Header); + + /* Initiate Message Transmission */ + CEC_StartOfMessage(); + + while ((SendFrame == 0) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + if (SendStatus == 0) + { + errorstatus = (HDMI_CEC_Error) TransErrorCode; + } + + return errorstatus; +} + + +/** + * @brief Get the ESR register status. + * @param None + * @retval HDMI_CEC_Error: CEC Error code + */ +HDMI_CEC_Error HDMI_CEC_GetErrorStatus (void) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + + /* Bit timing error case*/ + if (CEC_GetFlagStatus(CEC_FLAG_BTE) != RESET) + { + errorstatus = HDMI_CEC_BIT_TIMING; + } + /* Bit period error case */ + if (CEC_GetFlagStatus(CEC_FLAG_BPE) != RESET) + { + errorstatus = HDMI_CEC_BIT_PERIOD; + } + /* Recieve error case */ + if (CEC_GetFlagStatus(CEC_FLAG_RBTFE) != RESET) + { + errorstatus = HDMI_CEC_RX_BLOCK_FINISHED; + } + /* Start bit error case*/ + if (CEC_GetFlagStatus(CEC_FLAG_SBE) != RESET) + { + errorstatus = HDMI_CEC_START_BIT; + } + /* Acknowledge error case*/ + if (CEC_GetFlagStatus(CEC_FLAG_ACKE) != RESET) + { + errorstatus = HDMI_CEC_BLOCK_ACKNOWLEDGE; + } + /* Line error case */ + if (CEC_GetFlagStatus(CEC_FLAG_LINE) != RESET) + { + errorstatus = HDMI_CEC_LINE; + } + /* Transfert error case*/ + if (CEC_GetFlagStatus(CEC_FLAG_TBTFE) != RESET) + { + errorstatus = HDMI_CEC_TX_BLOCK_FINISHED; + } + /* Clear All errors */ + CEC_ClearFlag(CEC_FLAG_RERR); + CEC_ClearFlag(CEC_FLAG_TERR); + return errorstatus; +} + +/** + * @brief Allows to process all the interrupts that are high. + * @param None + * @retval None + */ +void HDMI_CEC_ProcessIRQSrc(void) +{ + /********************** Reception *********************************************/ + /* Check if a reception error occured */ + if (CEC_GetFlagStatus(CEC_FLAG_RERR)) + { + /* Set receive status bit (Error) */ + ReceiveStatus = 0; + ReceivedFrame = 1; + RecepErrorCode = HDMI_CEC_GetErrorStatus(); + CEC_ClearFlag(CEC_FLAG_RERR | CEC_FLAG_RSOM | CEC_FLAG_REOM | CEC_FLAG_RBTF); + } + else if (CEC_GetFlagStatus(CEC_FLAG_RBTF)) + { + /* Check if the byte received is the last one of the message */ + if (CEC_GetFlagStatus(CEC_FLAG_REOM)) + { + HDMI_CEC_RX_MessageStructPrivate.Operande[RxCounter-1] = CEC_ReceiveDataByte(); + HDMI_CEC_RX_MessageStructPrivate.RxMessageLength = RxCounter; + ReceiveStatus = SUCCESS; + ReceivedFrame = 1; + } + /* Check if the byte received is a Header */ + else if (CEC_GetFlagStatus(CEC_FLAG_RSOM)) + { + ReceiveStatus = 0; + HDMI_CEC_RX_MessageStructPrivate.Header = CEC_ReceiveDataByte(); + RxCounter = 0; + } + /* Receive each byte except header in the reception buffer */ + else + { + if (RxCounter != 0) + { + HDMI_CEC_RX_MessageStructPrivate.Operande[RxCounter-1] = CEC_ReceiveDataByte(); + RxCounter++; + } + else + { + HDMI_CEC_RX_MessageStructPrivate.Opcode = CEC_ReceiveDataByte(); + RxCounter++; + } + + } + /* Clear all reception flags */ + CEC_ClearFlag(CEC_FLAG_RSOM | CEC_FLAG_REOM | CEC_FLAG_RBTF); + } + + /********************** Transmission ******************************************/ + /* Check if a transmission error occured */ + if (CEC_GetFlagStatus(CEC_FLAG_TERR)) + { + TransErrorCode = HDMI_CEC_GetErrorStatus(); + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + SendFrame = 1; + SendStatus = 0; + } + /* Check if end of message bit is set in the data to be transmitted */ + else if (CEC_GetFlagStatus(CEC_FLAG_TEOM)) + { + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_RBTF); + CEC_EndOfMessageCmd(DISABLE); + SendFrame = 1; + SendStatus = SUCCESS; + } + /* Check if data byte has been sent */ + else if (CEC_GetFlagStatus(CEC_FLAG_TBTRF)) + { + /* Set EOM bit if the byte to be transmitted is the last one of the TransmitBuffer */ + if (TxCounter == (HDMI_CEC_TX_MessageStructPrivate.TxMessageLength)) + { + CEC_SendDataByte(BufferPointer[TxCounter]); + TxCounter++; + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(ENABLE); + } + else + { + /* Put the byte in the TX Buffer */ + CEC_SendDataByte(BufferPointer[TxCounter]); + TxCounter++; + CEC_ClearFlag(CEC_FLAG_TBTRF); + } + } +} + +/** + * @brief Report physical address to all other devices thus allowing any + device to create a map of the network. + * @param None + * @retval HDMI_CEC_Error: CEC Error code. + */ +HDMI_CEC_Error HDMI_CEC_ReportPhysicalAddress(void) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + HDMI_CEC_Message HDMI_CEC_TX_Message; + + HDMI_CEC_TX_Message.Header = ((MyLogicalAddress << 4) | 0xF); + HDMI_CEC_TX_Message.Opcode = HDMI_CEC_OPCODE_REPORT_PHYSICAL_ADDRESS; + HDMI_CEC_TX_Message.Operande[0] = MyPhysicalAddress >> 8; + HDMI_CEC_TX_Message.Operande[1] = MyPhysicalAddress & 0xFF; + HDMI_CEC_TX_Message.Operande[2] = DeviceType; + HDMI_CEC_TX_Message.TxMessageLength = 0x03; + + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_Message); + + return errorstatus; +} + +/** + * @brief Handle CEC command receive callback. + * When receiving the STANDBY Opcode commande, the system is entred in + * Stop mode and when wakeup, the PLL is configured as system clock and + * the HSI is selected as PLL source. + * @param None + * @retval None + */ +void HDMI_CEC_CommandCallBack(void) +{ + uint8_t i = 0, sendcount = 0; + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + EXTI_InitTypeDef EXTI_InitStructure; + + switch (HDMI_CEC_RX_MessageStructPrivate.Opcode) + { + case HDMI_CEC_OPCODE_REPORT_PHYSICAL_ADDRESS: + HDMI_CEC_MapStruct.PhysicalAddress_A = HDMI_CEC_RX_MessageStructPrivate.Operande[1] >> 4; + HDMI_CEC_MapStruct.PhysicalAddress_B = HDMI_CEC_RX_MessageStructPrivate.Operande[1] & 0x0F; + HDMI_CEC_MapStruct.PhysicalAddress_C = HDMI_CEC_RX_MessageStructPrivate.Operande[0] >> 4; + HDMI_CEC_MapStruct.PhysicalAddress_D = HDMI_CEC_RX_MessageStructPrivate.Operande[0] & 0x0F; + HDMI_CEC_MapStruct.LogicalAddress = (HDMI_CEC_RX_MessageStructPrivate.Header >> 0x4) & 0x0F; + HDMI_CEC_MapStruct.DeviceType = HDMI_CEC_RX_MessageStructPrivate.Operande[2]; + HDMI_CEC_DeviceMap[DeviceCount] = HDMI_CEC_MapStruct; + HDMI_CEC_Follower_String[(HDMI_CEC_DeviceMap[DeviceCount].LogicalAddress)][1] = (uint8_t *)"1"; + DeviceCount++; + break; + + case HDMI_CEC_OPCODE_STANDBY: + /* CEC Line */ + GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource8); + /* Configure the CEC Line as EXTI Line on Falling Edge */ + EXTI_ClearITPendingBit(EXTI_Line8); + EXTI_InitStructure.EXTI_Line = EXTI_Line8; + EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; + EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; + EXTI_InitStructure.EXTI_LineCmd = ENABLE; + EXTI_Init(&EXTI_InitStructure); + /* Request to enter Stop mode */ + PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI); + + /* Disable the CEC EXTI Line */ + EXTI_InitStructure.EXTI_LineCmd = DISABLE; + EXTI_Init(&EXTI_InitStructure); + /* Configure the PLL Source */ + RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_6); + + /* Enable PLL */ + RCC_PLLCmd(ENABLE); + + /* Wait till PLL is ready */ + while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) + { + } + + /* Select PLL as system clock source */ + RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); + + /* Wait till PLL is used as system clock source */ + while(RCC_GetSYSCLKSource() != 0x08) + { + } + break; + + case HDMI_CEC_OPCODE_GET_CEC_VERSION: + /* Send the Used CEC version */ + HDMI_CEC_TX_MessageStructPrivate.Header = ((MyLogicalAddress << 4) | HDMI_CEC_RX_MessageStructPrivate.Header >> 4); + HDMI_CEC_TX_MessageStructPrivate.Opcode = HDMI_CEC_OPCODE_CEC_VERSION; + HDMI_CEC_TX_MessageStructPrivate.Operande[0] = HDMI_CEC_VERSION; /* CEC Version */ + HDMI_CEC_TX_MessageStructPrivate.TxMessageLength = 0x01; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + + /* Retransmit message until 5 time */ + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + } + break; + + case HDMI_CEC_OPCODE_GIVE_PHYSICAL_ADDRESS: + /* Send the Physical address */ + errorstatus = HDMI_CEC_ReportPhysicalAddress(); + sendcount = 0; + /* Retransmit message until 5 time */ + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = HDMI_CEC_ReportPhysicalAddress(); + } + break; + + case HDMI_CEC_OPCODE_FEATURE_ABORT: + /* The device doesn't support the requested message type, or that it cannot + execute it at the present time. */ + FeatureOpcode = HDMI_CEC_RX_MessageStructPrivate.Operande[0]; + AbortReason = HDMI_CEC_RX_MessageStructPrivate.Operande[1]; + break; + + case HDMI_CEC_OPCODE_GIVE_OSD_NAME: + /* Send the OSD name = STM32100B CEC*/ + HDMI_CEC_TX_MessageStructPrivate.Header = ((MyLogicalAddress << 4) | HDMI_CEC_RX_MessageStructPrivate.Header >> 4); + HDMI_CEC_TX_MessageStructPrivate.Opcode = HDMI_CEC_OPCODE_SET_OSD_NAME; + /* STM32100B*/ + HDMI_CEC_TX_MessageStructPrivate.Operande[0] = 0x53; + HDMI_CEC_TX_MessageStructPrivate.Operande[1] = 0x54; + HDMI_CEC_TX_MessageStructPrivate.Operande[2] = 0x4D; + HDMI_CEC_TX_MessageStructPrivate.Operande[3] = 0x33; + HDMI_CEC_TX_MessageStructPrivate.Operande[4] = 0x32; + HDMI_CEC_TX_MessageStructPrivate.Operande[5] = 0x31; + HDMI_CEC_TX_MessageStructPrivate.Operande[6] = 0x30; + HDMI_CEC_TX_MessageStructPrivate.Operande[7] = 0x30; + HDMI_CEC_TX_MessageStructPrivate.Operande[8] = 0x42; + HDMI_CEC_TX_MessageStructPrivate.Operande[9] = 0x20; + /* CEC */ + HDMI_CEC_TX_MessageStructPrivate.Operande[10] = 0x43; + HDMI_CEC_TX_MessageStructPrivate.Operande[11] = 0x45; + HDMI_CEC_TX_MessageStructPrivate.Operande[12] = 0x43; + HDMI_CEC_TX_MessageStructPrivate.TxMessageLength = 13; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + sendcount = 0; + /* Retransmit message until 5 time */ + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + } + break; + + case HDMI_CEC_OPCODE_ROUTING_CHANGE: + for (i = 0;i < 0x14;i++) + { + if ((HDMI_CEC_DeviceMap[i].PhysicalAddress_A == HDMI_CEC_RX_MessageStructPrivate.Operande[1] >> 4) && + (HDMI_CEC_DeviceMap[i].PhysicalAddress_B == HDMI_CEC_RX_MessageStructPrivate.Operande[1]&0x0F) && + (HDMI_CEC_DeviceMap[i].PhysicalAddress_C == HDMI_CEC_RX_MessageStructPrivate.Operande[0] >> 4) && + (HDMI_CEC_DeviceMap[i].PhysicalAddress_D == HDMI_CEC_RX_MessageStructPrivate.Operande[0]&0x0F)) + { + HDMI_CEC_MapStruct.LogicalAddress = (HDMI_CEC_RX_MessageStructPrivate.Header >> 0x4) & 0x0F; + HDMI_CEC_MapStruct.DeviceType = HDMI_CEC_RX_MessageStructPrivate.Operande[2]; + HDMI_CEC_DeviceMap[i] = HDMI_CEC_MapStruct; + } + } + break; + + default: + /* Send Abort feature*/ + HDMI_CEC_TX_MessageStructPrivate.Header = ((MyLogicalAddress << 4) | HDMI_CEC_RX_MessageStructPrivate.Header >> 4); + HDMI_CEC_TX_MessageStructPrivate.Opcode = HDMI_CEC_OPCODE_FEATURE_ABORT; + HDMI_CEC_TX_MessageStructPrivate.Operande[0] = 0x02; /* defines command to be performed */ + HDMI_CEC_TX_MessageStructPrivate.Operande[1] = HDMI_CEC_REFUSED; /* Reason for abort feature */ + HDMI_CEC_TX_MessageStructPrivate.TxMessageLength = 0x02; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + sendcount = 0; + /* Retransmit message until 5 time */ + while ((errorstatus != HDMI_CEC_OK) && sendcount < 0x5) + { + sendcount++; + errorstatus = HDMI_CEC_TransmitMessage(&HDMI_CEC_TX_MessageStructPrivate); + } + break; + + } +} + +/** + * @brief Check the connected CEC devices. + * @param None + * @retval HDMI_CEC_Error + */ +HDMI_CEC_Error HDMI_CEC_CheckConnectedDevices(void) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + uint32_t count = 0, i = 1; + + /*----------------------------- TV device ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x0); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[0][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Recording device 1 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x1); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[1][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + /*----------------------------- Recording device 2 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x2); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[2][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Tuner 1 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x3); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[3][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + /*----------------------------- Playback device 1 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x4); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[4][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Audio system ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x5); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[5][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Tuner 2 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x6); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[6][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Tuner 3 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x7); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[7][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Playback device 2 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x8); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[8][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + /*----------------------------- Recording device 3 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0x9); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[9][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + /*----------------------------- Tuner 4 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0xA); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[10][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + /*----------------------------- Playback device 3 ---------------------------*/ + CEC_OwnAddressConfig(MyLogicalAddress); /* Own address = MyLogicalAddress */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte((MyLogicalAddress << 4) | 0xB); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_OK) + { + HDMI_CEC_Follower_String[11][1] = (uint8_t *)"1"; + i++; + errorstatus = HDMI_CEC_OK; + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + + CECDevicesNumber = i - 1; + + return errorstatus; +} + +/** + * @brief Physical address discovery. + * @param None + * @retval HDMI_CEC_Error: CEC Error code. + */ +static HDMI_CEC_Error PhysicalAddressDiscovery(void) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; +#ifdef HDMI_CEC_USE_DDC + uint32_t index = 0, i = 0; +#endif + + /*------------------------------ Physical address discovery -----------------*/ + if (HDMI_CEC_ROOT == 0x1) + { + MyPhysicalAddress = 0x0000; + /* The HDMI-CEC here is configured as sink or as a repeater. The configuration + of the +5V power signal and the HPD should be well configured. + Implement here the EDID Structure to be sent to the HDMI source. + For more details please refer to the HDMI specification. + The EDID structure should be sent to the device source using the DDC Channel + and using the HPD signal. */ + } + else + { + +#ifdef HDMI_CEC_USE_DDC + /* The HDMI-CEC here is configured as source or as a repeater. The configuration + of the +5V power signal and the HPD should be well configured. + The source should wait for HPD and then read the EDID structure. */ + while(GPIO_ReadInputDataBit(HDMI_CEC_HPD_GPIO_PORT, HDMI_CEC_HPD_PIN) == RESET) + { + } + /* Wait for 100 ms after HPD was received */ + for(i = 0; i < 0x5FFFF; i++) + { + } + + /* Return the physical address using the I2C by reading the 2 bytes 24 and + 25 form the EDID */ + /* Read the EDID Block 0 and EDID Block 1 at address 0xA0 */ + /*!< While the bus is busy */ + while(I2C_GetFlagStatus(HDMI_CEC_I2C, I2C_FLAG_BUSY)) + { + } + + /*!< Send START condition */ + I2C_GenerateSTART(HDMI_CEC_I2C, ENABLE); + + /*!< Test on EV5 and clear it */ + while(!I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_MODE_SELECT)) + { + } + + /*!< Send EEPROM address for write */ + I2C_Send7bitAddress(HDMI_CEC_I2C, 0xA0, I2C_Direction_Transmitter); + + + /*!< Test on EV6 and clear it */ + while(!I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)) + { + } + + /*!< Send the EEPROM's internal address to read from: Only one byte address */ + I2C_SendData(HDMI_CEC_I2C, 0x00); + + /*!< Test on EV8 and clear it */ + while(!I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_BYTE_TRANSMITTED)) + { + } + + /*!< Send STRAT condition a second time */ + I2C_GenerateSTART(HDMI_CEC_I2C, ENABLE); + + /*!< Test on EV5 and clear it */ + while(!I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_MODE_SELECT)) + { + } + + /*!< Send EEPROM address for read */ + I2C_Send7bitAddress(HDMI_CEC_I2C, 0xA1, I2C_Direction_Receiver); + + /*!< Test on EV6 and clear it */ + while(!I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)) + { + } + + /* While there is data to be read */ + while (NumByteToRead-- > 1) + { + while(I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_BYTE_RECEIVED)) + { + } + for(i = 0; i < 0xFFF; i++) + { + } + pBuffer[index++] = I2C_ReceiveData(HDMI_CEC_I2C); + } + + /* Disable Acknowledgement */ + I2C_AcknowledgeConfig(HDMI_CEC_I2C, DISABLE); + + /* Send STOP Condition */ + I2C_GenerateSTOP(HDMI_CEC_I2C, ENABLE); + + while(I2C_CheckEvent(HDMI_CEC_I2C, I2C_EVENT_MASTER_BYTE_RECEIVED)); + pBuffer[index] = I2C_ReceiveData(HDMI_CEC_I2C); + + /* Enable Acknowledgement to be ready for another reception */ + I2C_AcknowledgeConfig(HDMI_CEC_I2C, ENABLE); + MyPhysicalAddress = ((pBuffer[138] << 8) | pBuffer[137]); +#else + MyPhysicalAddress = 0x1000; +#endif + } + + return errorstatus; +} +/** + * @brief Allocate the logical address. + * @param None + * @retval HDMI_CEC_Error: CEC Error code. + */ +static HDMI_CEC_Error LogicalAddressAllocation(void) +{ + HDMI_CEC_Error errorstatus = HDMI_CEC_OK; + uint32_t count = 0; + + /*------------------ Logical address allocation -----------------------------*/ + /* Get the device type */ + /* Device type = CEC_TV */ + if (DeviceType == HDMI_CEC_TV) + { + if (HDMI_CEC_ROOT) + { + MyLogicalAddress = 0x00; + } + else + { + CEC_OwnAddressConfig(0xE); /* Own address = 0xE */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0xEE); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the polling message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x0E; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + MyLogicalAddress = 0x0F; + errorstatus = HDMI_CEC_DEVICE_UNREGISTRED; + } + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF); + CEC_EndOfMessageCmd(DISABLE); + } + + /* Device type = CEC_RECORDING */ + if (DeviceType == HDMI_CEC_RECORDING) + { + CEC_OwnAddressConfig(0x1); /* Own address = 0x1 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x11); + + /* Start of message */ + CEC_StartOfMessage(); + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x01; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0x2); /* Own address = 0x2 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x22); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x02; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0x9); /* Own address = 0x9 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x99); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x09; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + MyLogicalAddress = 0x0F; + errorstatus = HDMI_CEC_DEVICE_UNREGISTRED; + } + } + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + CEC_EndOfMessageCmd(DISABLE); + } + + /* Device type = CEC_TUNER */ + if (DeviceType == HDMI_CEC_TUNER) + { + CEC_OwnAddressConfig(0x3); /* Own address = 0x3 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x33); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x03; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0x6); /* Own address = 0x6 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x66); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x06; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0x7); /* Own address = 0x7 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x77); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x07; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0xA); /* Own address = 0xA */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0xAA); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x0A; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + MyLogicalAddress = 0x0F; + errorstatus = HDMI_CEC_DEVICE_UNREGISTRED; + } + } + } + } + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + CEC_EndOfMessageCmd(DISABLE); + } + + /* Device type = CEC_PLAYBACK */ + if (DeviceType == HDMI_CEC_PLAYBACK) + { + CEC_OwnAddressConfig(0x4); /* Own address = 0x4 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x44); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x04; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0x8); /* Own address = 0x8 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x88); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x08; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + + CEC_EndOfMessageCmd(DISABLE); + + CEC_OwnAddressConfig(0xB); /* Own address = 0xBB */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0xBB); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x0B; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + MyLogicalAddress = 0x0F; + errorstatus = HDMI_CEC_DEVICE_UNREGISTRED; + } + } + } + + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + CEC_EndOfMessageCmd(DISABLE); + } + + /* Device type = CEC Audio System */ + if (DeviceType == HDMI_CEC_AUDIOSYSTEM) + { + CEC_OwnAddressConfig(0x5); /* Own address = 0x5 */ + + CEC_EndOfMessageCmd(ENABLE); + + CEC_SendDataByte(0x55); + + /* Start of message */ + CEC_StartOfMessage(); + + count = 0; + + /* Wait till the header message is sent */ + while ((CEC_GetFlagStatus(CEC_FLAG_TBTRF) == RESET) && (CEC_GetFlagStatus(CEC_FLAG_TERR) == RESET) && (count < HDMI_CEC_TIMEOUT_VALUE)) + { + count++; + } + + if (count >= HDMI_CEC_TIMEOUT_VALUE) + { + errorstatus = HDMI_CEC_TIMEOUT; + return(errorstatus); + } + + errorstatus = HDMI_CEC_GetErrorStatus(); + + if (errorstatus == HDMI_CEC_BLOCK_ACKNOWLEDGE) + { + MyLogicalAddress = 0x05; + errorstatus = HDMI_CEC_OK; + } + else if (errorstatus == HDMI_CEC_OK) + { + MyLogicalAddress = 0x0F; + errorstatus = HDMI_CEC_DEVICE_UNREGISTRED; + } + + /* Clear CEC CSR register */ + CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR); + CEC_EndOfMessageCmd(DISABLE); + } + + return errorstatus; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ + + |