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authorVasil Zlatanov <v@skozl.com>2017-05-04 15:14:36 +0100
committerVasil Zlatanov <v@skozl.com>2017-05-04 15:14:36 +0100
commitbcf234f5883edb850d844ffceb9905c890d9498e (patch)
tree436105e51212bcde1389efe9680e1adc3ded4430 /src/main.cpp
parent02feeb68dcfe121b6bcb370001f63de3a7151b6b (diff)
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Add pwm function
Diffstat (limited to 'src/main.cpp')
-rw-r--r--src/main.cpp20
1 files changed, 14 insertions, 6 deletions
diff --git a/src/main.cpp b/src/main.cpp
index eecc5da..19f280d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -7,14 +7,15 @@
#define SW_PERIOD 20000 // 20ms
void tout(void);
+void pwm_invert(void);
// Onboard LED
-DigitalOut alive(LED1);
-
+DigitalOut out_wave(LED1);
PinName switch_pin[] = { SW_PINS };
Counter *switch_position[4];
-Ticker timer;
+Ticker timer;
+Ticker pwm;
volatile uint16_t switch_count[4] = { 0, 0, 0, 0 };
volatile uint16_t switch_pressed[4] = { 0, 0, 0, 0 };
@@ -60,12 +61,15 @@ int main(void)
uint16_t frequency = 1000*current_f[3] + 100*current_f[2] + 10*current_f[1] + current_f[0];
- oled.printf("\nF:%u F:%d", frequency, frequency);
+ oled.printf("\nF:%u ", frequency);
+
+ if (frequency < 25)
+ pwm.attach_ms(&pwm_invert, 500/frequency);
+ else
+ pwm.attach_us(&pwm_invert, 500000/frequency);
//Copy the display buffer to the display
oled.display();
-
- alive = !alive;
}
}
@@ -90,3 +94,7 @@ void tout(void)
// Update display
update = 1;
}
+
+void pwm_invert(void){
+ out_wave = !out_wave;
+}