send timestamp via uart for debugging

src/uart.cpp

@@ -0,0 +1,45 @@
+#include <Arduino.h>
+#include <sys/time.h>
+
+#include <lmic/oslmic.h>
+#include "globals.h"
+#include "driver/uart.h"
+
+void time_uart_send(void * pvParameters) {
+  struct timeval curTime;
+
+  const char* format =   "\bOAL%y%m%dF%H%M%S\r";
+  char timestamp[64] = {0};
+  TickType_t xLastWakeTime = xTaskGetTickCount();
+
+  for(;;) {
+    time_t nowTime = now();
+    strftime(timestamp, sizeof(timestamp), format, localtime(&nowTime));
+    ESP_LOGI(TAG, "Current Time:  %s", timestamp);
+
+    int len = strlen(timestamp)+1;
+
+    // Send Data via UART
+    uart_write_bytes(UART_NUM_1, timestamp, len);
+
+    // gettimeofday(&curTime, &tz);
+    int sleep = 1000 - (curTime.tv_usec/1000);
+    ostime_t now = os_getTime();
+    printf("Sleep Time:  %d, now: %d\n", sleep, now);
+    vTaskDelayUntil( &xLastWakeTime, (TickType_t)(sleep/portTICK_PERIOD_MS) );
+
+    // Read UART for testing purposes
+    /**
+    uint8_t *data = (uint8_t *) malloc(CLOCK_BUF_SIZE);
+
+    // Read Data via UART
+    uart_read_bytes(UART_NUM_1, data, CLOCK_BUF_SIZE, 20 / portTICK_RATE_MS);
+    const char * dataC = (const char *) data;
+    ESP_LOGI(TAG, "Data Read: %s", dataC);
+
+    free(data);
+    **/
+  }
+
+  vTaskDelete(NULL);
+}

src/uart.h

@@ -0,0 +1 @@
+void time_uart_send(void * pvParameters);