From: Nathael Pajani <nathael.pajani@ed3l.fr>
Date: Thu, 15 Jun 2017 07:00:33 +0000 (+0200)
Subject: Echo on serial must be only a "best effort" and not mangle with ongoing transmissions
X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=d94a828f577e56a8062f3f0e23104bbc59f7e500;p=soft%2Flpc122x%2Fcore

Echo on serial must be only a "best effort" and not mangle with ongoing transmissions
---

diff --git a/drivers/serial.c b/drivers/serial.c
index 155478e..c7ad543 100644
--- a/drivers/serial.c
+++ b/drivers/serial.c
@@ -92,8 +92,10 @@ static void uart_check_rx(struct uart_device* uart, uint32_t intr)
 			/* Call the Rx callback */
 			uart->rx_callback(data);
 		} else {
-			/* Echo */
-			uart->regs->func.buffer = data;
+			/* Echo ? */
+			if (!uart->sending) {
+				uart->regs->func.buffer = data;
+			}
 		}
 	}
 	/* FIXME : handle RX erors */