Silence debug_printf() throughout is UART is not enabled

Author: ccattuto

firmware/nRF51/tag-proximity/inc/main.h

@@ -30,6 +30,7 @@ extern uint8_t hibernate;
 extern uint16_t status_flags;
 extern uint8_t boot_count;
 extern uint32_t reset_reason;
+extern uint8_t uart_enabled;
 
 extern void blink(uint8_t times);
 extern void blink_fast(uint8_t times);

firmware/nRF51/tag-proximity/src/log.c

@@ -561,7 +561,8 @@ uint8_t flash_setup_logging(uint32_t uid)
 	if (nrf_gpio_pin_read(CONFIG_SWITCH_PIN) && blink_wait_release() > 1000)
 	{
 		blink_fast(5);
-		debug_printf("\n\rERASING FLASH\n\r");
+		if (uart_enabled)
+			debug_printf("\n\rERASING FLASH\n\r");
 		flash_erase_chip();
 		flash_wait_ready(1);
 
@@ -602,7 +603,8 @@ uint8_t flash_setup_logging(uint32_t uid)
 #endif
 
 	log_running = 1;
-	debug_printf("\n\rLogging starts at block %i of %i\n\r", current_block, flash_log_last_block);
+	if (uart_enabled)
+		debug_printf("\n\rLogging starts at block %i of %i\n\r", current_block, flash_log_last_block);
 
 	return 0;
 }