From: Keith Packard <keithp@keithp.com>
Date: Wed, 4 Jan 2012 04:46:25 +0000 (-0800)
Subject: altos: flush stdout when fifo from arduino serial port is empty
X-Git-Tag: 1.0.9.4~58
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;ds=inline;h=c6821ae734a7efaf2e069f6c5edf9605a9dbe125;p=fw%2Faltos

altos: flush stdout when fifo from arduino serial port is empty

This avoids leaving bytes pending inside altos

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/core/ao.h b/src/core/ao.h
index 494993f1..8c5335c4 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -943,6 +943,10 @@ ao_serial_init(void);
 #endif
 
 #if HAS_SERIAL_0
+
+extern volatile __xdata struct ao_fifo	ao_usart0_rx_fifo;
+extern volatile __xdata struct ao_fifo	ao_usart0_tx_fifo;
+
 void
 ao_serial0_rx0_isr(void) ao_arch_interrupt(2);
 
diff --git a/src/teleshield-v0.1/ao_ardu_serial.c b/src/teleshield-v0.1/ao_ardu_serial.c
index 7d4dc0db..7ff859af 100644
--- a/src/teleshield-v0.1/ao_ardu_serial.c
+++ b/src/teleshield-v0.1/ao_ardu_serial.c
@@ -23,6 +23,8 @@ ao_ardu_serial_recv(void)
 	char	c;
 
 	for (;;) {
+		if (ao_fifo_empty(ao_usart0_rx_fifo))
+			flush();
 		c = ao_serial0_getchar();
 		putchar (c);
 	}