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Correct prototype for sdk_uart_rx_one_char, kudos to @foogod

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This commit is contained in:
Johan Kanflo 2015-08-06 21:00:24 +02:00
parent 0e521a74a9
commit 64a1e5598b
2 changed files with 9 additions and 4 deletions
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10
core/newlib_syscalls.c
View file

@ -48,9 +48,13 @@ long _write_r(struct _reent *r, int fd, const char *ptr, int len )
*/
long _read_r( struct _reent *r, int fd, char *ptr, int len )
{
for(int i = 0; i < len; i++)
ptr[i] = sdk_uart_rx_one_char();
return len;
for(int i = 0; i < len; i++) {
char ch;
while (sdk_uart_rx_one_char(&ch)) ;
ptr[i] = ch;
}
return len;
}
/* These are stub implementations for the reentrant syscalls that

3
include/espressif/sdk_private.h
View file

@ -30,8 +30,9 @@ struct ip_addr;
void sdk_uart_div_modify(uint32_t uart_no, uint32_t new_divisor);
/* Read a single character from the UART.
Returns 0 on success, 1 if no character in fifo
*/
char sdk_uart_rx_one_char(void);
int sdk_uart_rx_one_char(char *buf);
/* Write a single character to the UART.
*/