boards/calliope-mini: configure pwm

boards/calliope-mini/Makefile.features

@@ -4,6 +4,7 @@ FEATURES_PROVIDED += periph_i2c
 FEATURES_PROVIDED += periph_rtt
 FEATURES_PROVIDED += periph_timer
 FEATURES_PROVIDED += periph_uart
+FEATURES_PROVIDED += periph_pwm
 
 # Various other features (if any)
 FEATURES_PROVIDED += radio_nrfmin

boards/calliope-mini/include/periph_conf.h

@@ -57,18 +57,11 @@ static const timer_conf_t timer_config[] = {
         .channels = 3,
         .bitmode  = TIMER_BITMODE_BITMODE_16Bit,
         .irqn     = TIMER1_IRQn
-    },
-    {
-        .dev      = NRF_TIMER2,
-        .channels = 3,
-        .bitmode  = TIMER_BITMODE_BITMODE_16Bit,
-        .irqn     = TIMER2_IRQn
     }
 };
 
 #define TIMER_0_ISR         isr_timer0
 #define TIMER_1_ISR         isr_timer1
-#define TIMER_2_ISR         isr_timer2
 
 #define TIMER_NUMOF         (sizeof(timer_config) / sizeof(timer_config[0]))
 /** @} */
@@ -129,6 +122,15 @@ static const i2c_conf_t i2c_config[] = {
 #define RADIO_IRQ_PRIO      1
 /** @} */
 
+/**
+ * @name    PWM configuration
+ * @{
+ */
+#define PWM_NUMOF           (1U)
+#define PWM_TIMER           NRF_TIMER2
+#define PWM_PIN             (0U)
+/** @} */
+
 #ifdef __cplusplus
 }
 #endif