95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
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#include "ch.h"
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#include "hal.h"
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// Green, Orange, Red, Blue
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static const int leds[] = { GPIOD_LED4 , GPIOD_LED3 , GPIOD_LED5 , GPIOD_LED6 };
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static const int speeds[] = { 50 , 250 , 500 , 1000 };
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static PWMConfig pwmConfig = {
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2000 ,
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2000 ,
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NULL ,
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{
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{ PWM_OUTPUT_ACTIVE_HIGH , NULL } ,
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{ PWM_OUTPUT_ACTIVE_HIGH , NULL } ,
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{ PWM_OUTPUT_ACTIVE_HIGH , NULL } ,
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{ PWM_OUTPUT_ACTIVE_HIGH , NULL } ,
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} ,
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0 , // CR2
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};
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static void setupPWM( void )
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{
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int i;
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// Initialise PWM, route output to LEDs, setup channels
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pwmStart( &PWMD4 , &pwmConfig );
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for ( i = 0 ; i < 4 ; i ++ ) {
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palSetPadMode( GPIOD , leds[ i ] , PAL_MODE_ALTERNATE( 2 ) );
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pwmEnableChannel( &PWMD4 , i , speeds[ i ] );
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}
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}
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static void pwmReset( void * ptr __attribute__((unused)) )
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{
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pwmStop( &PWMD4 );
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setupPWM( );
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}
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static VirtualTimer pwmResetTimer;
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static void onButtonPressed( EXTDriver * driver __attribute__((unused)) ,
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expchannel_t channel __attribute__((unused)) )
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{
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int i;
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chSysLockFromIsr( );
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for ( i = 0 ; i < 4 ; i ++ ) {
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pwmConfig.channels[ i ].mode = 3 - pwmConfig.channels[ i ].mode;
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}
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chVTSetI( &pwmResetTimer , 1 , &pwmReset , NULL );
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chSysUnlockFromIsr( );
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}
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static const EXTConfig extConfig = {{
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{ EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART , onButtonPressed } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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{ EXT_CH_MODE_DISABLED , NULL } ,
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}};
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int main(void)
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{
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halInit();
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chSysInit();
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setupPWM( );
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extStart( &EXTD1 , &extConfig );
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while (TRUE) {
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chThdYield( );
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}
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}
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