diff options
Diffstat (limited to 'src/stm/ao_serial_stm.c')
| -rw-r--r-- | src/stm/ao_serial_stm.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/src/stm/ao_serial_stm.c b/src/stm/ao_serial_stm.c index 00409f4a..94138edc 100644 --- a/src/stm/ao_serial_stm.c +++ b/src/stm/ao_serial_stm.c @@ -17,13 +17,6 @@ #include <ao.h> -struct ao_stm_usart { - struct ao_fifo rx_fifo; - struct ao_fifo tx_fifo; - struct stm_usart *reg; - uint8_t tx_started; -}; - void ao_debug_out(char c) { @@ -78,16 +71,19 @@ ao_usart_getchar(struct ao_stm_usart *usart) return c; } -char +int ao_usart_pollchar(struct ao_stm_usart *usart) { - char c; + int c; ao_arch_block_interrupts(); if (ao_fifo_empty(usart->rx_fifo)) c = AO_READ_AGAIN; - else - ao_fifo_remove(usart->rx_fifo,c); + else { + uint8_t u; + ao_fifo_remove(usart->rx_fifo,u); + c = u; + } ao_arch_release_interrupts(); return c; } @@ -201,7 +197,7 @@ ao_serial1_putchar(char c) ao_usart_putchar(&ao_stm_usart1, c); } -char +int ao_serial1_pollchar(void) { return ao_usart_pollchar(&ao_stm_usart1); @@ -232,7 +228,7 @@ ao_serial2_putchar(char c) ao_usart_putchar(&ao_stm_usart2, c); } -char +int ao_serial2_pollchar(void) { return ao_usart_pollchar(&ao_stm_usart2); @@ -263,7 +259,7 @@ ao_serial3_putchar(char c) ao_usart_putchar(&ao_stm_usart3, c); } -char +int ao_serial3_pollchar(void) { return ao_usart_pollchar(&ao_stm_usart3); |