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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CAN/LoopBack/main.c')
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CAN/LoopBack/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CAN/LoopBack/main.c new file mode 100644 index 0000000..6651d04 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CAN/LoopBack/main.c @@ -0,0 +1,388 @@ +/** + ****************************************************************************** + * @file CAN/LoopBack/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" +#include "stm32_eval.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup CAN_LoopBack + * @{ + */ + + + +/* Private define ------------------------------------------------------------*/ +#define __CAN1_USED__ +/* #define __CAN2_USED__*/ /* Please check that you device is + Connectivity line when using CAN2 */ + +#ifdef __CAN1_USED__ + #define CANx CAN1 +#else /*__CAN2_USED__*/ + #define CANx CAN2 +#endif /* __CAN1_USED__ */ + +/* Private typedef -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +__IO uint32_t ret = 0; /* for return of the interrupt handling */ +volatile TestStatus TestRx; + +/* Private function prototypes -----------------------------------------------*/ +void NVIC_Configuration(void); +TestStatus CAN_Polling(void); +TestStatus CAN_Interrupt(void); + +/* 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 + */ + + + +#ifdef __CAN1_USED__ + /* CANx Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); +#else /*__CAN2_USED__*/ + /* CAN1 & 2 Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); + RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN2, ENABLE); +#endif /* __CAN1_USED__ */ + + /* NVIC Configuration */ + NVIC_Configuration(); + + /* Configures LED 1..4 */ + STM_EVAL_LEDInit(LED1); + STM_EVAL_LEDInit(LED2); + STM_EVAL_LEDInit(LED3); + STM_EVAL_LEDInit(LED4); + + /* Turns selected LED Off */ + STM_EVAL_LEDOff(LED1); + STM_EVAL_LEDOff(LED2); + STM_EVAL_LEDOff(LED3); + STM_EVAL_LEDOff(LED4); + + /* CAN transmit at 125Kb/s and receive by polling in loopback mode */ + TestRx = CAN_Polling(); + + if (TestRx == FAILED) + { + /* Turn on led LD3 */ + STM_EVAL_LEDOn(LED3); + } + else + { + /* Turn on led LD1 */ + STM_EVAL_LEDOn(LED1); + } + + /* CAN transmit at 500Kb/s and receive by interrupt in loopback mode */ + TestRx = CAN_Interrupt(); + + if (TestRx == FAILED) + { + /* Turn on led LD4 */ + STM_EVAL_LEDOn(LED4); + } + else + { + /* Turn on led LD2 */ + STM_EVAL_LEDOn(LED2); + } + + /* Infinite loop */ + while (1) + { + } +} + +/** + * @brief Configures the CAN, transmit and receive by polling + * @param None + * @retval PASSED if the reception is well done, FAILED in other case + */ +TestStatus CAN_Polling(void) +{ + CAN_InitTypeDef CAN_InitStructure; + CAN_FilterInitTypeDef CAN_FilterInitStructure; + CanTxMsg TxMessage; + CanRxMsg RxMessage; + uint32_t i = 0; + uint8_t TransmitMailbox = 0; + + /* CAN register init */ + CAN_DeInit(CANx); + + CAN_StructInit(&CAN_InitStructure); + + /* CAN cell init */ + CAN_InitStructure.CAN_TTCM=DISABLE; + CAN_InitStructure.CAN_ABOM=DISABLE; + CAN_InitStructure.CAN_AWUM=DISABLE; + CAN_InitStructure.CAN_NART=DISABLE; + CAN_InitStructure.CAN_RFLM=DISABLE; + CAN_InitStructure.CAN_TXFP=DISABLE; + CAN_InitStructure.CAN_Mode=CAN_Mode_LoopBack; + + /* Baudrate = 125kbps*/ + CAN_InitStructure.CAN_SJW=CAN_SJW_1tq; + CAN_InitStructure.CAN_BS1=CAN_BS1_2tq; + CAN_InitStructure.CAN_BS2=CAN_BS2_3tq; + CAN_InitStructure.CAN_Prescaler=48; + CAN_Init(CANx, &CAN_InitStructure); + + /* CAN filter init */ +#ifdef __CAN1_USED__ + CAN_FilterInitStructure.CAN_FilterNumber=0; +#else /*__CAN2_USED__*/ + CAN_FilterInitStructure.CAN_FilterNumber=14; +#endif /* __CAN1_USED__ */ + CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; + CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; + CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000; + CAN_FilterInitStructure.CAN_FilterIdLow=0x0000; + CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000; + CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000; + CAN_FilterInitStructure.CAN_FilterFIFOAssignment=0; + + + CAN_FilterInitStructure.CAN_FilterActivation=ENABLE; + CAN_FilterInit(&CAN_FilterInitStructure); + + /* transmit */ + TxMessage.StdId=0x11; + TxMessage.RTR=CAN_RTR_DATA; + TxMessage.IDE=CAN_ID_STD; + TxMessage.DLC=2; + TxMessage.Data[0]=0xCA; + TxMessage.Data[1]=0xFE; + + TransmitMailbox=CAN_Transmit(CANx, &TxMessage); + i = 0; + while((CAN_TransmitStatus(CANx, TransmitMailbox) != CANTXOK) && (i != 0xFFFF)) + { + i++; + } + + i = 0; + while((CAN_MessagePending(CANx, CAN_FIFO0) < 1) && (i != 0xFFFF)) + { + i++; + } + + /* receive */ + RxMessage.StdId=0x00; + RxMessage.IDE=CAN_ID_STD; + RxMessage.DLC=0; + RxMessage.Data[0]=0x00; + RxMessage.Data[1]=0x00; + CAN_Receive(CANx, CAN_FIFO0, &RxMessage); + + if (RxMessage.StdId!=0x11) + { + return FAILED; + } + + if (RxMessage.IDE!=CAN_ID_STD) + { + return FAILED; + } + + if (RxMessage.DLC!=2) + { + return FAILED; + } + + if ((RxMessage.Data[0]<<8|RxMessage.Data[1])!=0xCAFE) + { + return FAILED; + } + + return PASSED; /* Test Passed */ +} + +/** + * @brief Configures the CAN, transmit and receive using interrupt. + * @param None + * @retval PASSED if the reception is well done, FAILED in other case + */ +TestStatus CAN_Interrupt(void) +{ + CAN_InitTypeDef CAN_InitStructure; + CAN_FilterInitTypeDef CAN_FilterInitStructure; + CanTxMsg TxMessage; + uint32_t i = 0; + + /* CAN register init */ + CAN_DeInit(CANx); + + + CAN_StructInit(&CAN_InitStructure); + + /* CAN cell init */ + CAN_InitStructure.CAN_TTCM=DISABLE; + CAN_InitStructure.CAN_ABOM=DISABLE; + CAN_InitStructure.CAN_AWUM=DISABLE; + CAN_InitStructure.CAN_NART=DISABLE; + CAN_InitStructure.CAN_RFLM=DISABLE; + CAN_InitStructure.CAN_TXFP=DISABLE; + CAN_InitStructure.CAN_Mode=CAN_Mode_LoopBack; + CAN_InitStructure.CAN_SJW=CAN_SJW_1tq; + + /* Baudrate = 500 Kbps */ + CAN_InitStructure.CAN_BS1=CAN_BS1_2tq; + CAN_InitStructure.CAN_BS2=CAN_BS2_3tq; + CAN_InitStructure.CAN_Prescaler=12; + CAN_Init(CANx, &CAN_InitStructure); + + /* CAN filter init */ +#ifdef __CAN1_USED__ + CAN_FilterInitStructure.CAN_FilterNumber=1; +#else /*__CAN2_USED__*/ + CAN_FilterInitStructure.CAN_FilterNumber=15; +#endif /* __CAN1_USED__ */ + CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; + CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; + CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000; + CAN_FilterInitStructure.CAN_FilterIdLow=0x0000; + CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000; + CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000; + CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FIFO0; + CAN_FilterInitStructure.CAN_FilterActivation=ENABLE; + CAN_FilterInit(&CAN_FilterInitStructure); + + /* CAN FIFO0 message pending interrupt enable */ + CAN_ITConfig(CANx, CAN_IT_FMP0, ENABLE); + + /* transmit 1 message */ + TxMessage.StdId=0; + TxMessage.ExtId=0x1234; + TxMessage.IDE=CAN_ID_EXT; + TxMessage.RTR=CAN_RTR_DATA; + TxMessage.DLC=2; + TxMessage.Data[0]=0xDE; + TxMessage.Data[1]=0xCA; + CAN_Transmit(CANx, &TxMessage); + + /* initialize the value that will be returned */ + ret = 0xFF; + + /* receive message with interrupt handling */ + i=0; + while((ret == 0xFF) && (i < 0xFFF)) + { + i++; + } + + if (i == 0xFFF) + { + ret=0; + } + + /* disable interrupt handling */ + CAN_ITConfig(CANx, CAN_IT_FMP0, DISABLE); + + return (TestStatus)ret; +} + +/** + * @brief Configures the NVIC and Vector Table base address. + * @param None + * @retval None + */ +void NVIC_Configuration(void) +{ + NVIC_InitTypeDef NVIC_InitStructure; + + /* Enable CANx RX0 interrupt IRQ channel */ +#ifndef STM32F10X_CL + +#ifdef __CAN1_USED__ + NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn; +#else /*__CAN2_USED__*/ + /* CAN2 is not implemented in the device */ + #error "CAN2 is implemented only in Connectivity line devices" + +#endif /*__CAN1_USED__*/ +#else +#ifdef __CAN1_USED__ + NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn; +#else /*__CAN2_USED__*/ + NVIC_InitStructure.NVIC_IRQChannel = CAN2_RX0_IRQn; +#endif /*__CAN1_USED__*/ + +#endif /* STM32F10X_CL*/ + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +} + + +#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****/ |