CAN通信-程序编译成功但仍无法正常发送指令
#include <Arduino_CAN.h>#include <CanUtil.h>
#include <R7FA4M1_CAN.h>
#include <R7FA6M5_CAN.h>
#include <SyncCanMsgRingbuffer.h>
static uint32_t const CAN_ID = 0x601;
void setup() {
Serial.begin(115200);
while (!Serial) {}
CAN.begin(CanBitRate::BR_125k);
if (CAN.begin(CanBitRate::BR_125k)) {
Serial.println("CAN.begin(...) Complished.");
delay(100);
Serial.println("CAN_BR is 125k.");
}
if (!CAN.begin(CanBitRate::BR_250k)) {
Serial.println("CAN.begin(...) failed.");
}
}
static uint32_t msg0_cnt = 0;
static uint32_t msg1_cnt = 0;
static uint32_t msg2_cnt = 0;
void loop(){
uint8_t const msg0_data[] = { 0xCA, 0xFE, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
memcpy((void *)(msg0_data + 4), &msg0_cnt, sizeof(msg0_cnt));
CanMsg const msg0(CanStandardId(CAN_ID), sizeof(msg0_data), msg0_data);
CAN.write(msg0);
if (int const rc = CAN.write(msg0); rc < 0) {
Serial.print("CAN.write(...) failed with error code ");
Serial.println(rc);
}
msg0_cnt++;
delay(1000);
}需要用Arduino Uno R4（板载CAN总线）跟伺服驱动器通信。
程序编译成功，但串行端口监视器始终显示传输失败的消息。
我觉得可能是发送命令的函数没用对，希望有大佬能给指点一下！！！！
接线拍照
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