Merge pull request #214 from tomcombriat/fixRenesas

Fix of mozziAnalogRead for Renesas

Author: tomcombriat

MozziGuts_impl_RENESAS_ADC.hpp

@@ -5,12 +5,97 @@ It contains functions to interact with the ADC in order to implement async ADC r
 */
 
 #include <analog.h>
-#include <analog.cpp>
+//#include <analog.cpp>
 #include <IRQManager.h>
 
 
+/** VERBATIM from Arduino's analog.cpp
+ */
+#define MAX_ADC_CHANNELS   29
+static uint16_t analog_values_by_channels[MAX_ADC_CHANNELS] = {0};
+static void ADC_irq_cbk(adc_callback_args_t * cb_data);
+static ADC_Container adc(0,ADC_irq_cbk);
+static ADC_Container adc1(1,ADC_irq_cbk);
 
+static ADCIrqCbk_f scan_complete_cbk = nullptr;
+static ADCIrqCbk_f scan_complete_b_cbk = nullptr;
+static ADCIrqCbk_f window_compare_a_cbk = nullptr;
+static ADCIrqCbk_f window_compare_b_cbk = nullptr;
 
+static void readAllGroupA(ADC_Container *_adc) {
+  for(int i = 0; i < MAX_ADC_CHANNELS; i++) {
+    if(_adc->channel_cfg.scan_mask & (1 << i)) {
+      //is the channel active -> yes, read it
+      R_ADC_Read(&(_adc->ctrl), (adc_channel_t)i, analog_values_by_channels + i);
+    }
+  }
+}
+
+static void readAllGroupB(ADC_Container *_adc) {
+  for(int i = 0; i < MAX_ADC_CHANNELS; i++) {
+    if(_adc->channel_cfg.scan_mask_group_b & (1 << i)) {
+      //is the channel active -> yes, read it
+      R_ADC_Read(&(_adc->ctrl), (adc_channel_t)i, analog_values_by_channels + i);
+    }
+  }
+}
+
+
+static void ADC_irq_cbk(adc_callback_args_t * cb_data) {
+  if(cb_data->event == ADC_EVENT_SCAN_COMPLETE) {
+    if(scan_complete_cbk != nullptr) {
+      if(cb_data->unit == 0) {
+        readAllGroupA(&adc);
+      }
+      else if(cb_data->unit == 1) {
+        readAllGroupA(&adc1);
+      }
+      scan_complete_cbk(cb_data->unit);
+    }
+  }
+  else if(cb_data->event == ADC_EVENT_SCAN_COMPLETE_GROUP_B) {
+    if(scan_complete_b_cbk != nullptr) {
+      if(cb_data->unit == 0) {
+        readAllGroupB(&adc);
+      }
+      else if(cb_data->unit == 1) {
+        readAllGroupB(&adc1);
+      }
+      scan_complete_b_cbk(cb_data->unit);
+    }
+  }
+  else if(cb_data->event == ADC_EVENT_WINDOW_COMPARE_A) {
+    if(window_compare_a_cbk != nullptr) {
+      window_compare_a_cbk(cb_data->unit);
+    }
+  }
+  else if(cb_data->event == ADC_EVENT_WINDOW_COMPARE_B) {
+    if(window_compare_b_cbk != nullptr) {
+      window_compare_b_cbk(cb_data->unit);
+    }
+  }
+}
+
+/* -------------------------------------------------------------------------- */
+static ADC_Container *get_ADC_container_ptr(int32_t pin, uint16_t &cfg) {
+/* -------------------------------------------------------------------------- */  
+  ADC_Container *rv = nullptr;
+  auto cfg_adc = getPinCfgs(pin, PIN_CFG_REQ_ADC);
+  if(cfg_adc[0] > 0 ) {
+    if(IS_ADC1(cfg_adc[0])) {
+      rv = &adc1;
+    }
+    else {
+      rv = &adc;
+    }
+  }
+  cfg = cfg_adc[0];
+  return rv;
+
+}
+
+/* END of verbatim
+ */
 //////////////////// ADC //////////////
 
 void startScan(int pin)