我目前正在做一个项目,使用RL78G14作为微控制器。该项目涉及制作红外遥控器和控制面板。如果一直在尝试编写代码来设置 UART。在传递 TxBuf 和 RxBuf 时,我收到一些传递不兼容指针类型的警告消息,并且我的 UART 似乎不起作用。谁能帮我写代码?
void main(void)
{
R_MAIN_UserInit();
uart1Status = R_UART1_Receive(&RxBuf[0],1); // Prime UART1 Rx
while (1U)
{
//Check if byte received on UART
if (RxFlag)
{
// clear rx flag
RxFlag = 0U;
//Echo back the received character
TxBuf[0] = RxBuf[0];
//Send TX buffer, and specify how many characters to write
uart1Status = R_UART1_Send(TxBuf,1);
// re-Prime UART Rx
uart1Status = R_UART1_Receive(RxBuf,1);
}
//If a character has been transmitted
if (TxFlag)
{
// End of UART2 transmit
TxFlag = 0U; // clear tx flag
}
}
/***********************************************************************************************************************
* Function Name: R_UART1_Receive
* Description : This function receives UART1 data.
* Arguments : rx_buf -
* receive buffer pointer
* rx_num -
* buffer size
* Return Value : status -
* MD_OK or MD_ARGERROR
***********************************************************************************************************************/
MD_STATUS R_UART1_Receive(uint8_t * const rx_buf, uint16_t rx_num)
{
MD_STATUS status = MD_OK;
if (rx_num < 1U)
{
status = MD_ARGERROR;
}
else
{
g_uart1_rx_count = 0U;
g_uart1_rx_length = rx_num;
gp_uart1_rx_address = rx_buf;
}
return (status);
}
/***********************************************************************************************************************
* Function Name: R_UART1_Send
* Description : This function sends UART1 data.
* Arguments : tx_buf -
* transfer buffer pointer
* tx_num -
* buffer size
* Return Value : status -
* MD_OK or MD_ARGERROR
***********************************************************************************************************************/
MD_STATUS R_UART1_Send(uint8_t * const tx_buf, uint16_t tx_num)
{
MD_STATUS status = MD_OK;
if (tx_num < 1U)
{
status = MD_ARGERROR;
}
else
{
gp_uart1_tx_address = tx_buf;
g_uart1_tx_count = tx_num;
STMK1 = 1U; /* disable INTST1 interrupt */
TXD1 = *gp_uart1_tx_address;
gp_uart1_tx_address++;
g_uart1_tx_count--;
STMK1 = 0U; /* enable INTST1 interrupt */
}
return (status);
}
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如果您使用的是开发板,请检查R11引脚。它连接到CAN RXD芯片TJA1050T,因此不接收任何数据。切下 R11 跳线,它将开始工作。
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你启动了UART1吗? 需要在初始化中启动它。