application: use sensor_sr04

application.c

@@ -32,6 +32,7 @@
 #include "usb_cdcacm.h" // USB CDC ACM utilities
 #include "terminal.h" // handle the terminal interface
 #include "menu.h" // menu utilities
+#include "sensor_sr04.h" // range measurement utilities
 
 /** watchdog period in ms */
 #define WATCHDOG_PERIOD 10000
@@ -349,7 +350,7 @@ void main(void)
 	board_setup(); // setup board
 	uart_setup(); // setup USART (for printing)
 	usb_cdcacm_setup(); // setup USB CDC ACM (for printing)
-	puts("\nwelcome to the CuVoodoo STM32F4 example firmware\n"); // print welcome message
+	puts("\nwelcome to the CuVoodoo STM32F4 yeast raiser\n"); // print welcome message
 
 #if DEBUG
 	// show reset cause
@@ -428,6 +429,10 @@ void main(void)
 	// important: do not re-enable backup_domain_write_protect, since this will prevent clearing flags (but RTC registers do not need to be unlocked)
 	puts("OK\n");
 
+	puts("setup HC-SR04 range sensor: ");
+	sensor_sr04_setup(); // setup peripheral
+	puts("OK\n");
+
 	// setup terminal
 	terminal_prefix = ""; // set default prefix
 	terminal_process = &process_command; // set central function to process commands
@@ -457,7 +462,13 @@ void main(void)
 		}
 		if (second_flag) { // one second passed
 			second_flag = false; // clear flag
+			action = true; // action will be performed
 			led_toggle(); // toggle LED to indicate if main function is stuck
+			sensor_sr04_trigger(); // start measurement
+		}
+		if (sensor_sr04_distance) { // distance measurement is available
+			printf("%u\n", sensor_sr04_distance); // start measurement
+			sensor_sr04_distance = 0; // clear flag
 		}
 		if (action) { // go to sleep if nothing had to be done, else recheck for activity
 			action = false;