【 声明版权所有欢迎转载请勿用于商业用途。 联系信箱feixiaoxing 163.com】can其实在工业、医疗和运输业用的很多但是很多朋友可能仅仅用过ttl最多加上一个232或者是485这个时候就可以看看can。如果自己需要调试can特别是只有一个板子的情况下可以买一个pcan调试器。1、pcan是什么pcan就是一个usb转can的模块插在电脑上。买过来的时候里面的hex都是烧入好的不需要自己烧入了。2、安装驱动PEAK和hid/com口类的免驱模块相比较pcan需要自己安装驱动文件。驱动文件的名称就是PEAK-System_Driver-Setup-v500.zip。3、安装上位机软件pcanview驱动安装好pcan插上去的时候在设备管理器上就不会显示异常节点了。这个时候我们需要安装一个上位机就可以了这个上位机就是pcanview。4、物理连线连线的时候除了canh和canl另外别忘记连接gnd。5、没有can设备怎么办自己想学习can设备但是没有板子发can报文怎么办其实可以找一个带can接口的stm32f103c8t6发can协议报文即可#include stm32f10x.h // Device header #include stdio.h #include string.h /* Delay Functions */ static void Delay_us(uint32_t xus) { SysTick-LOAD 72 * xus; SysTick-VAL 0x00; SysTick-CTRL 0x00000005; while(!(SysTick-CTRL 0x00010000)); SysTick-CTRL 0x00000004; } static void Delay_ms(uint32_t xms) { while(xms--) { Delay_us(1000); } } /* USART1 (Debug output, PA9-TX / PA10-RX) */ void USART1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE); // PA9 - TX GPIO_InitStructure.GPIO_Pin GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOA, GPIO_InitStructure); // PA10 - RX GPIO_InitStructure.GPIO_Pin GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode GPIO_Mode_IPU; GPIO_Init(GPIOA, GPIO_InitStructure); USART_InitStructure.USART_BaudRate 115200; USART_InitStructure.USART_WordLength USART_WordLength_8b; USART_InitStructure.USART_StopBits USART_StopBits_1; USART_InitStructure.USART_Parity USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode USART_Mode_Tx | USART_Mode_Rx; USART_Init(USART1, USART_InitStructure); USART_Cmd(USART1, ENABLE); } void USART1_SendByte(uint8_t byte) { USART_SendData(USART1, byte); while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) RESET); } void USART1_SendString(char *str) { while (*str) { USART1_SendByte((uint8_t)*str); str; } } /* CAN1 (Remapped to PB8-RX / PB9-TX) */ void CAN1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; CAN_InitTypeDef CAN_InitStructure; CAN_FilterInitTypeDef CAN_FilterInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); // CAN1 remap: CAN_RX - PB8, CAN_TX - PB9 GPIO_PinRemapConfig(GPIO_Remap1_CAN1, ENABLE); // PB8 - CAN_RX GPIO_InitStructure.GPIO_Pin GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode GPIO_Mode_IPU; GPIO_Init(GPIOB, GPIO_InitStructure); // PB9 - CAN_TX GPIO_InitStructure.GPIO_Pin GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOB, GPIO_InitStructure); CAN_DeInit(CAN1); CAN_StructInit(CAN_InitStructure); CAN_InitStructure.CAN_TTCM DISABLE; CAN_InitStructure.CAN_ABOM ENABLE; 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_Normal; CAN_InitStructure.CAN_SJW CAN_SJW_1tq; CAN_InitStructure.CAN_BS1 CAN_BS1_13tq; CAN_InitStructure.CAN_BS2 CAN_BS2_4tq; CAN_InitStructure.CAN_Prescaler 4; // 500kbps APB136MHz CAN_Init(CAN1, CAN_InitStructure); // Filter: accept all IDs CAN_FilterInitStructure.CAN_FilterNumber 0; 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_Filter_FIFO0; CAN_FilterInitStructure.CAN_FilterActivation ENABLE; CAN_FilterInit(CAN_FilterInitStructure); } // Send a standard data frame, returns 1 on success, 0 on failure uint8_t CAN1_SendData(uint32_t id, uint8_t *data, uint8_t len) { CanTxMsg TxMessage; uint8_t mbox; uint32_t i 0; TxMessage.StdId id; TxMessage.ExtId 0; TxMessage.IDE CAN_ID_STD; TxMessage.RTR CAN_RTR_Data; TxMessage.DLC len; for (i 0; i len; i) { TxMessage.Data[i] data[i]; } mbox CAN_Transmit(CAN1, TxMessage); i 0; while ((CAN_TransmitStatus(CAN1, mbox) ! CANTXOK) (i 0xFFFFF)) { i; } return (i 0xFFFFF) ? 1 : 0; } /* main */ int main(void) { char buf[96]; uint16_t counter 0; uint8_t txData[8]; USART1_Init(); CAN1_Init(); USART1_SendString( CAN TX Demo Start (PB8/PB9, 500kbps) \r\n); while (1) { txData[0] (uint8_t)(counter 8); txData[1] (uint8_t)(counter 0xFF); txData[2] 0xAA; txData[3] 0xBB; txData[4] 0xCC; txData[5] 0xDD; txData[6] 0xEE; txData[7] 0xFF; if (CAN1_SendData(0x123, txData, 8)) { sprintf(buf, [TX] ID:0x123 DATA: %02X %02X %02X %02X %02X %02X %02X %02X\r\n, txData[0], txData[1], txData[2], txData[3], txData[4], txData[5], txData[6], txData[7]); } else { sprintf(buf, [TX] send failed!\r\n); } USART1_SendString(buf); counter; Delay_ms(500); // Send one frame every 500ms } }6、配置pcanview查看报文一切都准备好之后就可以打开pcanview查看can报文了。注意有一点就是波特率的设置。也就是pcan设置的速率要和对应电路板上的can速率一致比如都是500kb不然看不到对应的报文。
esp32开发与应用（题外话之PCAN调试器）
【 声明版权所有欢迎转载请勿用于商业用途。 联系信箱feixiaoxing 163.com】can其实在工业、医疗和运输业用的很多但是很多朋友可能仅仅用过ttl最多加上一个232或者是485这个时候就可以看看can。如果自己需要调试can特别是只有一个板子的情况下可以买一个pcan调试器。1、pcan是什么pcan就是一个usb转can的模块插在电脑上。买过来的时候里面的hex都是烧入好的不需要自己烧入了。2、安装驱动PEAK和hid/com口类的免驱模块相比较pcan需要自己安装驱动文件。驱动文件的名称就是PEAK-System_Driver-Setup-v500.zip。3、安装上位机软件pcanview驱动安装好pcan插上去的时候在设备管理器上就不会显示异常节点了。这个时候我们需要安装一个上位机就可以了这个上位机就是pcanview。4、物理连线连线的时候除了canh和canl另外别忘记连接gnd。5、没有can设备怎么办自己想学习can设备但是没有板子发can报文怎么办其实可以找一个带can接口的stm32f103c8t6发can协议报文即可#include stm32f10x.h // Device header #include stdio.h #include string.h /* Delay Functions */ static void Delay_us(uint32_t xus) { SysTick-LOAD 72 * xus; SysTick-VAL 0x00; SysTick-CTRL 0x00000005; while(!(SysTick-CTRL 0x00010000)); SysTick-CTRL 0x00000004; } static void Delay_ms(uint32_t xms) { while(xms--) { Delay_us(1000); } } /* USART1 (Debug output, PA9-TX / PA10-RX) */ void USART1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE); // PA9 - TX GPIO_InitStructure.GPIO_Pin GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOA, GPIO_InitStructure); // PA10 - RX GPIO_InitStructure.GPIO_Pin GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode GPIO_Mode_IPU; GPIO_Init(GPIOA, GPIO_InitStructure); USART_InitStructure.USART_BaudRate 115200; USART_InitStructure.USART_WordLength USART_WordLength_8b; USART_InitStructure.USART_StopBits USART_StopBits_1; USART_InitStructure.USART_Parity USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode USART_Mode_Tx | USART_Mode_Rx; USART_Init(USART1, USART_InitStructure); USART_Cmd(USART1, ENABLE); } void USART1_SendByte(uint8_t byte) { USART_SendData(USART1, byte); while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) RESET); } void USART1_SendString(char *str) { while (*str) { USART1_SendByte((uint8_t)*str); str; } } /* CAN1 (Remapped to PB8-RX / PB9-TX) */ void CAN1_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; CAN_InitTypeDef CAN_InitStructure; CAN_FilterInitTypeDef CAN_FilterInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); // CAN1 remap: CAN_RX - PB8, CAN_TX - PB9 GPIO_PinRemapConfig(GPIO_Remap1_CAN1, ENABLE); // PB8 - CAN_RX GPIO_InitStructure.GPIO_Pin GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode GPIO_Mode_IPU; GPIO_Init(GPIOB, GPIO_InitStructure); // PB9 - CAN_TX GPIO_InitStructure.GPIO_Pin GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOB, GPIO_InitStructure); CAN_DeInit(CAN1); CAN_StructInit(CAN_InitStructure); CAN_InitStructure.CAN_TTCM DISABLE; CAN_InitStructure.CAN_ABOM ENABLE; 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_Normal; CAN_InitStructure.CAN_SJW CAN_SJW_1tq; CAN_InitStructure.CAN_BS1 CAN_BS1_13tq; CAN_InitStructure.CAN_BS2 CAN_BS2_4tq; CAN_InitStructure.CAN_Prescaler 4; // 500kbps APB136MHz CAN_Init(CAN1, CAN_InitStructure); // Filter: accept all IDs CAN_FilterInitStructure.CAN_FilterNumber 0; 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_Filter_FIFO0; CAN_FilterInitStructure.CAN_FilterActivation ENABLE; CAN_FilterInit(CAN_FilterInitStructure); } // Send a standard data frame, returns 1 on success, 0 on failure uint8_t CAN1_SendData(uint32_t id, uint8_t *data, uint8_t len) { CanTxMsg TxMessage; uint8_t mbox; uint32_t i 0; TxMessage.StdId id; TxMessage.ExtId 0; TxMessage.IDE CAN_ID_STD; TxMessage.RTR CAN_RTR_Data; TxMessage.DLC len; for (i 0; i len; i) { TxMessage.Data[i] data[i]; } mbox CAN_Transmit(CAN1, TxMessage); i 0; while ((CAN_TransmitStatus(CAN1, mbox) ! CANTXOK) (i 0xFFFFF)) { i; } return (i 0xFFFFF) ? 1 : 0; } /* main */ int main(void) { char buf[96]; uint16_t counter 0; uint8_t txData[8]; USART1_Init(); CAN1_Init(); USART1_SendString( CAN TX Demo Start (PB8/PB9, 500kbps) \r\n); while (1) { txData[0] (uint8_t)(counter 8); txData[1] (uint8_t)(counter 0xFF); txData[2] 0xAA; txData[3] 0xBB; txData[4] 0xCC; txData[5] 0xDD; txData[6] 0xEE; txData[7] 0xFF; if (CAN1_SendData(0x123, txData, 8)) { sprintf(buf, [TX] ID:0x123 DATA: %02X %02X %02X %02X %02X %02X %02X %02X\r\n, txData[0], txData[1], txData[2], txData[3], txData[4], txData[5], txData[6], txData[7]); } else { sprintf(buf, [TX] send failed!\r\n); } USART1_SendString(buf); counter; Delay_ms(500); // Send one frame every 500ms } }6、配置pcanview查看报文一切都准备好之后就可以打开pcanview查看can报文了。注意有一点就是波特率的设置。也就是pcan设置的速率要和对应电路板上的can速率一致比如都是500kb不然看不到对应的报文。
