From d14d5b1aab236f0985a629cb0eb654a6d9d21ede Mon Sep 17 00:00:00 2001
From: Angus Gratton <gus@projectgus.com>
Date: Sat, 21 Nov 2015 17:12:29 +1100
Subject: [PATCH] stdin_uart_interrupt driver: Don't reset TX FIFO (loses
output otherwise)
Fixes bug in 'terminal' example where banner message didn't print on startup.
Relates to #59.
---
extras/stdin_uart_interrupt/stdin_uart_interrupt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/extras/stdin_uart_interrupt/stdin_uart_interrupt.c b/extras/stdin_uart_interrupt/stdin_uart_interrupt.c
index cee7b2f..38d2264 100644
--- a/extras/stdin_uart_interrupt/stdin_uart_interrupt.c
+++ b/extras/stdin_uart_interrupt/stdin_uart_interrupt.c
@@ -99,10 +99,10 @@ static void uart0_rx_init(void)
_xt_isr_attach(INUM_UART, uart0_rx_handler);
_xt_isr_unmask(1 << INUM_UART);
- // clear rx and tx fifo,not ready
+ // reset the rx fifo
uint32_t conf = UART(UART0).CONF0;
- UART(UART0).CONF0 = conf | UART_CONF0_RXFIFO_RESET | UART_CONF0_TXFIFO_RESET;
- UART(UART0).CONF0 = conf & ~(UART_CONF0_RXFIFO_RESET | UART_CONF0_TXFIFO_RESET);
+ UART(UART0).CONF0 = conf | UART_CONF0_RXFIFO_RESET;
+ UART(UART0).CONF0 = conf & ~UART_CONF0_RXFIFO_RESET;
// set rx fifo trigger
UART(UART0).CONF1 |= (trig_lvl & UART_CONF1_RXFIFO_FULL_THRESHOLD_M) << UART_CONF1_RXFIFO_FULL_THRESHOLD_S;