atmel/samd: Add basic PWM support which only allows for changing the duty.

1 files changed, 42 insertions, 1 deletions

diff --git a/atmel-samd/modmachine_pin.h b/atmel-samd/modmachine_pin.h
index 4a02f41db..8ecafe798 100644
--- a/atmel-samd/modmachine_pin.h
+++ b/atmel-samd/modmachine_pin.h
@@ -35,15 +35,45 @@
 #include "asf/sam0/drivers/adc/adc_sam_d_r/adc_feature.h"
 
 // This macro is used to simplify pin definition in boards/<board>/pins.c
-#define PIN(p_name, p_has_adc, p_adc_input) \
+#define PIN_TWO_TIMERS(p_name, p_has_adc, p_adc_input, p_primary_tc, p_primary_tcc, \
+  p_primary_channel, p_primary_wave_output, p_primary_pin, p_primary_mux, \
+  p_secondary_tc, p_secondary_tcc, p_secondary_channel, p_secondary_wave_output, \
+  p_secondary_pin, p_secondary_mux) \
 const pin_obj_t pin_## p_name = { \
     { &pin_type }, \
     .name = MP_QSTR_ ## p_name, \
     .pin = (PIN_## p_name), \
     .has_adc = p_has_adc, \
     .adc_input = p_adc_input, \
+    .primary_timer = { \
+      .tc = p_primary_tc, \
+      .tcc = p_primary_tcc, \
+      .channel = p_primary_channel, \
+      .wave_output = p_primary_wave_output, \
+      .pin = p_primary_pin, \
+      .mux = p_primary_mux \
+    }, \
+    .secondary_timer = { \
+      .tc = p_secondary_tc, \
+      .tcc = p_secondary_tcc, \
+      .channel = p_secondary_channel, \
+      .wave_output = p_secondary_wave_output, \
+      .pin = p_secondary_pin, \
+      .mux = p_secondary_mux \
+    } \
 }
 
+#define PIN_NO_TIMERS_(p_name, p_has_adc, p_adc_input) \
+ PIN_TWO_TIMERS(p_name, p_has_adc, p_adc_input, \
+   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
+
+#define PIN_ONE_TIMER_(p_name, p_has_adc, p_adc_input, p_primary_tcc, \
+  p_primary_tc, p_primary_channel, p_primary_wave_output, \
+  p_primary_pin, p_primary_mux) \
+  PIN_TWO_TIMERS(p_name, p_has_adc, p_adc_input, p_primary_tcc, p_primary_tc, \
+    p_primary_channel, p_primary_wave_output, p_primary_pin, p_primary_mux, \
+    0, 0, 0, 0, 0, 0)
+
 #define NO_ADC_INPUT (0)
 
 #include "mpconfigport.h"
@@ -51,11 +81,22 @@ const pin_obj_t pin_## p_name = { \
 #include "py/obj.h"
 
 typedef struct {
+  Tc *const tc;
+  Tcc *const tcc;
+  uint8_t channel;
+  uint8_t wave_output;
+  uint32_t pin;
+  uint32_t mux;
+} pin_timer_t;
+
+typedef struct {
   mp_obj_base_t base;
   qstr name;
   uint32_t pin;
   bool has_adc;
   enum adc_positive_input adc_input;
+  pin_timer_t primary_timer;
+  pin_timer_t secondary_timer;
 } pin_obj_t;
 
 extern const mp_obj_type_t pin_type;