Method parseAndRunCommand

src/can-serial.cpp:164–393

}

INT8U Can232::parseAndRunCommand() {
    INT8U ret = LW232_OK;
    INT8U idx = 0;
    INT8U err = 0;

    lw232LastErr = LW232_OK;

    // __debug_buf("RX:", (char*)lw232Message, strlen((char*)lw232Message));

    switch (lw232Message[0]) {
    case LW232_CMD_SETUP:
        // Sn[CR] Setup with standard CAN bit-rates where n is 0-9.
        if (lw232CanChannelMode == LW232_STATUS_CAN_CLOSED) {
            idx = HexHelper::parseNibbleWithLimit(lw232Message[1], LW232_CAN_BAUD_NUM);
            lw232CanSpeedSelection = lw232CanBaudRates[idx];
        }
        else {
            ret = LW232_ERR;
        }
        break;
    case LW232_CMD_SETUP_BTR:
        // sxxyy[CR] Setup with BTR0/BTR1 CAN bit-rates where xx and yy is a hex value.
        ret = LW232_ERR; break;
    case LW232_CMD_OPEN:
        // O[CR] Open the CAN channel in normal mode (sending & receiving).
        if (lw232CanChannelMode == LW232_STATUS_CAN_CLOSED) {
            ret = openCanBus();
            if (ret == LW232_OK) {
              lw232CanChannelMode = LW232_STATUS_CAN_OPEN_NORMAL;
            }
        }
        else {
            ret = LW232_ERR;
        }
        break;
    case LW232_CMD_LISTEN:
        // L[CR] Open the CAN channel in listen only mode (receiving).
        if (lw232CanChannelMode == LW232_STATUS_CAN_CLOSED) {
            ret = openCanBus();
            if (ret == LW232_OK) {
              lw232CanChannelMode = LW232_STATUS_CAN_OPEN_LISTEN;
            }
        }
        else {
            ret = LW232_ERR;
        }
        break;
    case LW232_CMD_CLOSE:
        // C[CR] Close the CAN channel.
        if (lw232CanChannelMode != LW232_STATUS_CAN_CLOSED) {
            lw232CanChannelMode = LW232_STATUS_CAN_CLOSED;
        }
        else {
            ret = LW232_ERR;
        }
        break;
    case LW232_CMD_TX11:
        // tiiildd...[CR] Transmit a standard (11bit) CAN frame.