From 8d5f109a0cec326870e256c39a1511aa98d7e354 Mon Sep 17 00:00:00 2001
From: folkert van heusden <mail@vanheusden.com>
Date: Thu, 9 May 2024 22:51:35 +0200
Subject: [PATCH] dc-11 serial: prevent busy loop

---
 dc11.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dc11.cpp b/dc11.cpp
index a088082..a2a5c03 100644
--- a/dc11.cpp
+++ b/dc11.cpp
@@ -257,6 +257,8 @@ void dc11::set_serial(const int bitrate, const int rx, const int tx)
 		return;
 	}
 
+	Serial.printf("Tick period: %d\r\n", portTICK_PERIOD_MS);
+
 	serial_thread_running = true;
 
 	// Configure UART parameters
@@ -291,8 +293,10 @@ void dc11::serial_handler()
 
 		size_t n_available = 0;
 		ESP_ERROR_CHECK(uart_get_buffered_data_len(ESP32_UART, &n_available));
-		if (n_available == 0)
+		if (n_available == 0) {
+			vTaskDelay(4 / portTICK_PERIOD_MS);
 			continue;
+		}
 
 		char c = 0;
 		if (uart_read_bytes(ESP32_UART, &c, 1, 100) == 0)