Starts UART data reception.
Remark 1. This API function performs byte-level UART reception the number of times specified by the argument rx_num, and stores the data in the buffer specified by the argument rx_buf.
Remark 2. Actual UART reception starts after this API function is called, and R_UARTn_Start is then called.
[Syntax]
#include “r_cg_macrodriver.h”
MD_STATUS R_UARTn_Receive ( uint8_t * const rx_buf, uint16_t rx_num );
Remark n is the channel number.
[Argument(s)]
|
I/O |
Argument |
Description |
|
O |
uint8_t * const rx_buf; |
Pointer to a buffer to store the received data |
|
I |
uint16_t rx_num; |
Total amount of data to receive |
[Return value]
|
Macro |
Description |
|
MD_OK |
Normal completion |
|
MD_ARGERROR |
Invalid argument specification |