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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DMA/I2C_RAM/main.c')
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DMA/I2C_RAM/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DMA/I2C_RAM/main.c new file mode 100644 index 0000000..56a6480 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DMA/I2C_RAM/main.c @@ -0,0 +1,256 @@ +/** + ****************************************************************************** + * @file DMA/I2C_RAM/main.c + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Main program body + ****************************************************************************** + * @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 "stm32f10x.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup DMA_I2C_RAM + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define I2C1_DR_Address 0x40005410 +#define I2C2_DR_Address 0x40005810 +#define I2C1_SLAVE_ADDRESS7 0x30 +#define I2C2_SLAVE_ADDRESS7 0x30 +#define BufferSize 8 +#define ClockSpeed 100000 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +I2C_InitTypeDef I2C_InitStructure; +DMA_InitTypeDef DMA_InitStructure; +uint8_t I2C1_Buffer_Tx[BufferSize] = {1, 2, 3, 4, 5, 6, 7, 8}; +uint8_t I2C2_Buffer_Rx[BufferSize]; +uint8_t Tx_Idx = 0, Rx_Idx = 0; +volatile TestStatus TransferStatus; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +TestStatus Buffercmp(uint8_t* pBuffer, uint8_t* pBuffer1, uint16_t BufferLength); + +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief Main program + * @param None + * @retval None + */ +int main(void) +{ + /*!< At this stage the microcontroller clock setting is already configured, + this is done through SystemInit() function which is called from startup + file (startup_stm32f10x_xx.s) before to branch to application main. + To reconfigure the default setting of SystemInit() function, refer to + system_stm32f10x.c file + */ + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* Configure the GPIO ports */ + GPIO_Configuration(); + + /* DMA1 channel5 configuration ----------------------------------------------*/ + DMA_DeInit(DMA1_Channel5); + DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)I2C2_DR_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)I2C2_Buffer_Rx; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_BufferSize = BufferSize; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; + DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + DMA_Init(DMA1_Channel5, &DMA_InitStructure); + + /* DMA1 channel6 configuration ----------------------------------------------*/ + DMA_DeInit(DMA1_Channel6); + DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)I2C1_DR_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)I2C1_Buffer_Tx; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_Init(DMA1_Channel6, &DMA_InitStructure); + + /* Enable I2C1 and I2C2 ----------------------------------------------------*/ + I2C_Cmd(I2C1, ENABLE); + I2C_Cmd(I2C2, ENABLE); + + /* I2C1 configuration ------------------------------------------------------*/ + I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; + I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; + I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7; + I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; + I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; + I2C_InitStructure.I2C_ClockSpeed = ClockSpeed; + I2C_Init(I2C1, &I2C_InitStructure); + /* I2C2 configuration ------------------------------------------------------*/ + I2C_InitStructure.I2C_OwnAddress1 = I2C2_SLAVE_ADDRESS7; + I2C_Init(I2C2, &I2C_InitStructure); + + /*----- Transmission Phase -----*/ + /* Send I2C1 START condition */ + I2C_GenerateSTART(I2C1, ENABLE); + /* Test on I2C1 EV5 and clear it */ + while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); + /* Send I2C2 slave Address for write */ + I2C_Send7bitAddress(I2C1, I2C2_SLAVE_ADDRESS7, I2C_Direction_Transmitter); + /* Test on I2C2 EV1 and clear it */ + while(!I2C_CheckEvent(I2C2, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED)); + /* Test on I2C1 EV6 and clear it */ + while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); + + /* Enable I2C2 DMA */ + I2C_DMACmd(I2C2, ENABLE); + /* Enable I2C1 DMA */ + I2C_DMACmd(I2C1, ENABLE); + + /* Enable DMA1 Channel5 */ + DMA_Cmd(DMA1_Channel5, ENABLE); + /* Enable DMA1 Channel6 */ + DMA_Cmd(DMA1_Channel6, ENABLE); + + /* DMA1 Channel5 transfer complete test */ + while(!DMA_GetFlagStatus(DMA1_FLAG_TC5)); + /* DMA1 Channel6 transfer complete test */ + while(!DMA_GetFlagStatus(DMA1_FLAG_TC6)); + + /* Send I2C1 STOP Condition */ + I2C_GenerateSTOP(I2C1, ENABLE); + /* Test on I2C2 EV4 */ + while(!I2C_CheckEvent(I2C2, I2C_EVENT_SLAVE_STOP_DETECTED)); + /* Clear I2C2 STOPF flag: read operation to I2C_SR1 followed by a + write operation to I2C_CR1 */ + (void)(I2C_GetFlagStatus(I2C2, I2C_FLAG_STOPF)); + I2C_Cmd(I2C2, ENABLE); + + + /* Check if the transmitted and received data are equal */ + TransferStatus = Buffercmp(I2C1_Buffer_Tx, I2C2_Buffer_Rx, BufferSize); + /* TransferStatus = PASSED, if the transmitted and received data + are the same */ + /* TransferStatus = FAILED, if the transmitted and received data + are different */ + + while (1) + { + } +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* Enable DMA1 clock */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); + /* Enable GPIOB clock */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); + /* Enable I2C1 and I2C2 clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 | RCC_APB1Periph_I2C2, ENABLE); +} + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Configure I2C1 pins: SCL and SDA */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; + GPIO_Init(GPIOB, &GPIO_InitStructure); + + /* Configure I2C2 pins: SCL and SDA */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; + GPIO_Init(GPIOB, &GPIO_InitStructure); +} + +/** + * @brief Compares two buffers. + * @param pBuffer, pBuffer1: buffers to be compared. + * @param BufferLength: buffer's length + * @retval PASSED: pBuffer identical to pBuffer1 + * FAILED: pBuffer differs from pBuffer1 + */ +TestStatus Buffercmp(uint8_t* pBuffer, uint8_t* pBuffer1, uint16_t BufferLength) +{ + while(BufferLength--) + { + if(*pBuffer != *pBuffer1) + { + return FAILED; + } + + pBuffer++; + pBuffer1++; + } + + return PASSED; +} + +#ifdef USE_FULL_ASSERT + +/** + * @brief Reports the name of the source file and the source line number + * where the assert_param error has occurred. + * @param file: pointer to the source file name + * @param line: assert_param error line source number + * @retval None + */ +void assert_failed(uint8_t* file, uint32_t line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while (1) + { + } +} + +#endif + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |