diff options
Diffstat (limited to 'firmware/microblaze/lib/hal_uart.c')
| -rw-r--r-- | firmware/microblaze/lib/hal_uart.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/firmware/microblaze/lib/hal_uart.c b/firmware/microblaze/lib/hal_uart.c index 8f7f83a68..4d754d5e5 100644 --- a/firmware/microblaze/lib/hal_uart.c +++ b/firmware/microblaze/lib/hal_uart.c @@ -19,6 +19,7 @@ #include "memory_map.h" #include "hal_uart.h" #include "hal_io.h" +#include "mdelay.h" //just to save you from going insane, note that firmware/FPGA UARTs [0-2] correspond to serial ports [1-3]. //so in software, we refer to UART_DEBUG as UART0, but it transmits on pin TXD<1>. see the UART assignments in hal_uart.h. @@ -101,6 +102,16 @@ hal_uart_getc(hal_uart_name_t u) return uart_regs[u].rxchar; } +int +hal_uart_getc_timeout(hal_uart_name_t u) +{ + int timeout = 0; + while (((uart_regs[u].rxlevel) == 0) && (timeout++ < HAL_UART_TIMEOUT_MS)) + mdelay(1); + + return (uart_regs[u].rxlevel == 0) ? 0 : uart_regs[u].rxchar; +} + int hal_uart_rx_flush(hal_uart_name_t u) { char x; |