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[uart] fixed race condition in uart_putc

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Eric Holland
2016-02-19 23:10:58 -08:00
parent e7fffa1e30
commit 949f4959a5
1 changed files with 1 additions and 1 deletions
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2
platform/nrf51xxx/uart.c
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@@ -101,8 +101,8 @@ void nrf51_UART0_IRQ(void)
int uart_putc(int port, char c)
{
while (NRF_UART0->EVENTS_TXDRDY == 0);
NRF_UART0->TXD = c;
NRF_UART0->EVENTS_TXDRDY = 0;
NRF_UART0->TXD = c;
return 1;
}