Show motor speed on LED display 2

include/motor.h

@@ -7,4 +7,10 @@
 void motor_init(void);
 void motor_set_speed(int speed_rpm);
 
+struct motor_state {
+    int speed_rpm;
+};
+
+extern struct motor_state st_motor;
+
 #endif /* __MOTOR_H__ */

src/motor.c

@@ -2,7 +2,12 @@
 #include <motor.h>
 
 
+struct motor_state st_motor;
+
+
 void motor_init() {
+    memset(&st_motor, 0, sizeof(st_motor));
+
     /* PB1 (BT1) -> Open drain, TIM2 CH3N for speed PWM*/
     GPIOB->MODER &= ~GPIO_MODER_MODER0_Msk;
     GPIOB->MODER |= AF(1);
@@ -30,9 +35,18 @@ void motor_init() {
 }
 
 void motor_set_speed(int speed_rpm) {
+    if (speed_rpm > 3000) {
+        speed_rpm = 3000;
+    } else if (speed_rpm < -3000) {
+        speed_rpm = -3000;
+    }
+
+    st_motor.speed_rpm = speed_rpm;
+
     int speed = speed_rpm * 65535 / 3000;
     if (speed == 0) {
         GPIOB->BRR = 1<<12;
+
     } else {
         GPIOB->BSRR = 1<<12;
         if (speed < 0) {

src/proto.c

@@ -1,6 +1,7 @@
 
 #include <proto.h>
 #include <adc.h>
+#include <motor.h>
 #include <lcd.h>
 #include <led7seg.h>
 
@@ -291,12 +292,12 @@ ErrorCode tx_update_display() {
         },
         .led = {
             sys_time_us/10000,
-            0,
+            st_motor.speed_rpm,
             0
         },
         .led_fmt = {
             PROTO_LED_FMT_DEC | PROTO_LED_FMT_DP_2,
-            PROTO_LED_FMT_OFF,
+            PROTO_LED_FMT_DEC,
             PROTO_LED_FMT_OFF,
         },
     };