#include #include #include #include #include #include typedef enum { IDLE, SEND, SEND_CONT } e_mbusCommState; typedef struct { e_mbusCommState state; uint8_t retryCnt; uint8_t cmd; uint8_t addr; uint8_t sendBuf[5]; } t_mbusCommHandle; static t_mbusCommHandle mbusCommHandle = { .state = IDLE, .retryCnt = 0, .cmd = 0, .addr = 0 }; static void handleRequestEngine(void *handle) { t_mbusCommHandle *myHandle = (t_mbusCommHandle*) handle; switch (myHandle->state) { case IDLE: break; case SEND: myHandle->sendBuf[0] = 0x10; myHandle->sendBuf[1] = myHandle->cmd; myHandle->sendBuf[2] = myHandle->addr; myHandle->sendBuf[3] = myHandle->cmd + myHandle->addr; // checksum myHandle->sendBuf[4] = 0x16; myHandle->state = SEND_CONT; // no break !! case SEND_CONT: led(RED, OFF); if (! loopActive) { myHandle->retryCnt++; loopEnable(); schAdd(handleRequestEngine, handle, 10, 0); } else { // write(fd, sendBuf, 5); HAL_UART_Transmit_IT(&mbusUart, myHandle->sendBuf, 5); myHandle->state = IDLE; } break; default: myHandle->state = IDLE; break; } } void mbusCommRequest(uint8_t cmd, uint8_t addr) { if (mbusCommHandle.state == IDLE) { mbusCommHandle.state = SEND; mbusCommHandle.retryCnt = 0; mbusCommHandle.cmd = cmd; mbusCommHandle.addr = addr; schAdd(handleRequestEngine, (void*) &mbusCommHandle, 0, 0); } else { // busy } }