From 4a573bc638a747b4838d0ab486786f680c33558a Mon Sep 17 00:00:00 2001
From: Marius Gripp <m.gripp@greyrook.com>
Date: Tue, 27 Aug 2019 17:27:57 +0200
Subject: [PATCH] send time via uart

---
 include/main.h |  1 +
 src/main.cpp   |  2 ++
 src/uart.cpp   | 24 +++++++++++++++++++++++-
 src/uart.h     | 13 +++++++++++++
 4 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/include/main.h b/include/main.h
index bce12e51..215aa47e 100644
--- a/include/main.h
+++ b/include/main.h
@@ -16,6 +16,7 @@
 #include "irqhandler.h"
 #include "led.h"
 #include "spislave.h"
+#include "uart.h"
 #if(HAS_LORA)
 #include "lorawan.h"
 #endif
diff --git a/src/main.cpp b/src/main.cpp
index c6dae99e..2a7aab1a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -444,6 +444,8 @@ void setup() {
   // show compiled features
   ESP_LOGI(TAG, "Features:%s", features);
 
+  uart_setup();
+
 } // setup()
 
 void loop() {
diff --git a/src/uart.cpp b/src/uart.cpp
index 1303cbf5..b71b3e28 100644
--- a/src/uart.cpp
+++ b/src/uart.cpp
@@ -1,13 +1,30 @@
+#include "rtctime.h"
+
 #include <Arduino.h>
 #include <sys/time.h>
 
 #include <lmic/oslmic.h>
 #include "globals.h"
+#include "uart.h"
 #include "driver/uart.h"
 
 static const char TAG[] = __FILE__;
 TaskHandle_t UartTask = NULL;
 
+void uart_setup() {
+  // setup UART connection
+  uart_config_t uart_config = {
+      .baud_rate = 9600,
+      .data_bits = UART_DATA_7_BITS,
+      .parity    = UART_PARITY_EVEN,
+      .stop_bits = UART_STOP_BITS_1,
+      .flow_ctrl = UART_HW_FLOWCTRL_DISABLE
+  };
+  uart_param_config(UART_NUM_1, &uart_config);
+  uart_set_pin(UART_NUM_1, CLOCK_DCF_TXD, CLOCK_DCF_RXD, CLOCK_DCF_RTS, CLOCK_DCF_CTS);
+  uart_driver_install(UART_NUM_1, CLOCK_BUF_SIZE * 2, 0, 0, NULL, 0);
+}
+
 void time_uart_send(void * pvParameters) {
   struct timeval curTime;
 
@@ -16,7 +33,12 @@ void time_uart_send(void * pvParameters) {
   TickType_t xLastWakeTime = xTaskGetTickCount();
 
   for(;;) {
-    time_t nowTime = now();
+    struct timeval tv;
+    struct timezone tz;
+    if(gettimeofday(&tv, &tz) != 0) {
+      ESP_LOGI(TAG, "ERROR gettimeofday");
+    }
+    time_t nowTime = tv.tv_sec;
     strftime(timestamp, sizeof(timestamp), format, localtime(&nowTime));
     ESP_LOGI(TAG, "Current Time:  %s", timestamp);
 
diff --git a/src/uart.h b/src/uart.h
index 612aabbe..f12acbaf 100644
--- a/src/uart.h
+++ b/src/uart.h
@@ -1,2 +1,15 @@
+#ifndef UART_H
+#define UART_H
+
+// UART for Clock DCF
+#define CLOCK_DCF_TXD  (GPIO_NUM_4)
+#define CLOCK_DCF_RXD  (GPIO_NUM_15)
+#define CLOCK_DCF_RTS  (UART_PIN_NO_CHANGE)
+#define CLOCK_DCF_CTS  (UART_PIN_NO_CHANGE)
+#define CLOCK_BUF_SIZE (1024)
+
 void time_uart_send(void * pvParameters);
 void time_uart_send_start();
+void uart_setup();
+
+#endif