From aaee69ecfb5c48df620a510bd979a97d7799463c Mon Sep 17 00:00:00 2001
From: Florian Kogler <florian.kogler@becom-group.com>
Date: Tue, 15 Oct 2024 07:36:25 +0200
Subject: [PATCH] fix: flush uart queue on parity and frame error

Signed-off-by: aleks <aleks@espressif.com>

Merges https://github.com/espressif/esp-modbus/pull/78
---
 freemodbus/port/portserial.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/freemodbus/port/portserial.c b/freemodbus/port/portserial.c
index 84cf3a1..bdab001 100644
--- a/freemodbus/port/portserial.c
+++ b/freemodbus/port/portserial.c
@@ -161,10 +161,14 @@ static void vUartTask(void *pvParameters)
                 //Event of UART parity check error
                 case UART_PARITY_ERR:
                     ESP_LOGD(TAG, "uart parity error");
+                    xQueueReset(xMbUartQueue);
+                    uart_flush_input(ucUartNumber);
                     break;
                 //Event of UART frame error
                 case UART_FRAME_ERR:
                     ESP_LOGD(TAG, "uart frame error");
+                    xQueueReset(xMbUartQueue);
+                    uart_flush_input(ucUartNumber);
                     break;
                 default:
                     ESP_LOGD(TAG, "uart event type: %u", (unsigned)xEvent.type);