cc3200: New ADC API.

cc3200/boards/make-pins.py

@@ -35,6 +35,8 @@ class AF:
     def __init__(self, name, idx, fn, unit, type):
         self.name = name
         self.idx = idx
+        if self.idx > 15:
+            self.idx = -1
         self.fn = fn
         self.unit = unit
         self.type = type
@@ -57,12 +59,16 @@ class Pin:
 
     def print(self):
         print('// {}'.format(self.name))
+        if len(self.afs):
             print('const pin_af_t pin_{}_af[] = {{'.format(self.name))
             for af in self.afs:
                 af.print()
             print('};')
             print('pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, pin_{}_af, {});\n'.format(
                    self.name, self.name, self.port, self.gpio_bit, self.pin_num, self.name, len(self.afs)))
+        else:
+            print('pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, NULL, 0);\n'.format(
+                   self.name, self.name, self.port, self.gpio_bit, self.pin_num))
 
     def print_header(self, hdr_file):
         hdr_file.write('extern pin_obj_t pin_{:s};\n'.format(self.name))

cc3200/mods/pybpin.c

@@ -184,6 +184,16 @@ uint8_t pin_find_peripheral_unit (const mp_obj_t pin, uint8_t fn, uint8_t type)
     nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
 }
 
+uint8_t pin_find_peripheral_type (const mp_obj_t pin, uint8_t fn, uint8_t unit) {
+    pin_obj_t *pin_o = pin_find(pin);
+    for (int i = 0; i < pin_o->num_afs; i++) {
+        if (pin_o->af_list[i].fn == fn && pin_o->af_list[i].unit == unit) {
+            return pin_o->af_list[i].type;
+        }
+    }
+    nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
+}
+
 /******************************************************************************
 DEFINE PRIVATE FUNCTIONS
  ******************************************************************************/

cc3200/mods/pybpin.h

@@ -85,15 +85,15 @@ enum {
 };
 
 enum {
-    PIN_TYPE_ADC_CH0 = -1,
-    PIN_TYPE_ADC_CH1 = -1,
-    PIN_TYPE_ADC_CH2 = -1,
-    PIN_TYPE_ADC_CH3 = -1,
+    PIN_TYPE_ADC_CH0 = 0,
+    PIN_TYPE_ADC_CH1,
+    PIN_TYPE_ADC_CH2,
+    PIN_TYPE_ADC_CH3,
 };
 
 typedef struct {
   qstr name;
-  uint8_t idx;
+  int8_t  idx;
   uint8_t fn;
   uint8_t unit;
   uint8_t type;
@@ -136,5 +136,6 @@ void pin_config(pin_obj_t *self, int af, uint mode, uint type, int value, uint s
 pin_obj_t *pin_find(mp_obj_t user_obj);
 void pin_assign_pins_af (mp_obj_t *pins, uint32_t n_pins, uint32_t pull, uint32_t fn, uint32_t unit);
 uint8_t pin_find_peripheral_unit (const mp_obj_t pin, uint8_t fn, uint8_t type);
+uint8_t pin_find_peripheral_type (const mp_obj_t pin, uint8_t fn, uint8_t unit);
 
 #endif  // PYBPIN_H_

cc3200/qstrdefsport.h

@@ -177,9 +177,13 @@ Q(MASTER)
 
 // for ADC class
 Q(ADC)
-Q(read)
+Q(ADCChannel)
+Q(value)
 Q(init)
 Q(deinit)
+Q(channel)
+Q(id)
+Q(pin)
 
 #if MICROPY_HW_HAS_SDCARD
 // for SD class

tests/wipy/adc.py

+'''
+ADC test for the CC3200 based boards.
+'''
+
+from pyb import ADC
+from pyb import Pin
+import os
+
+machine = os.uname().machine
+if 'LaunchPad' in machine:
+    adc_pin = 'GP5'
+    adc_channel = 3
+elif 'WiPy' in machine:
+    adc_pin = 'GP3'
+    adc_channel = 1
+else:
+    raise Exception('Board not supported!')
+
+adc = ADC(0)
+print(adc)
+adc = ADC()
+print(adc)
+adc = ADC(0, bits=12)
+print(adc)
+
+apin = adc.channel(adc_channel)
+print(apin)
+apin = adc.channel(id=adc_channel)
+print(apin)
+apin = adc.channel(adc_channel, pin=adc_pin)
+print(apin)
+apin = adc.channel(id=adc_channel, pin=adc_pin)
+print(apin)
+
+print(apin.value() > 3000)
+print(apin() > 3000)
+
+# de-init must work
+apin.deinit()
+print(apin)
+
+adc.deinit()
+print(adc)
+print(apin)
+adc.init()
+print(adc)
+print(apin)
+apin.init()
+print(apin)
+print(apin() > 3000)
+
+# check for memory leaks...
+for i in range (0, 1000):
+    adc = ADC()
+    apin = adc.channel(adc_channel)
+
+# next ones should raise
+try:
+    adc = ADC(bits=17)
+except:
+    print('Exception')
+
+try:
+    adc = ADC(id=1)
+except:
+    print('Exception')
+
+try:
+    adc = ADC(0, 16)
+except:
+    print('Exception')
+
+adc = ADC()
+try:
+    apin = adc.channel(4)
+except:
+    print('Exception')
+
+try:
+    apin = adc.channel(-1)
+except:
+    print('Exception')
+
+try:
+    apin = adc.channel(0, pin='GP3')
+except:
+    print('Exception')
+
+apin = adc.channel(1)
+apin.deinit()
+try:
+    apin()
+except:
+    print('Exception')
+
+try:
+    apin.value()
+except:
+    print('Exception')
+
+adc.deinit()
+try:
+    apin.value()
+except:
+    print('Exception')
+
+try:
+    apin = adc.channel(1)
+except:
+    print('Exception')
+
+# re-init must work
+adc.init()
+apin.init()
+print(apin)
+print(apin() > 3000)

tests/wipy/adc.py.exp

+ADC(0, bits=12)
+ADC(0, bits=12)
+ADC(0, bits=12)
+ADCChannel(1, pin=GP3)
+ADCChannel(1, pin=GP3)
+ADCChannel(1, pin=GP3)
+ADCChannel(1, pin=GP3)
+True
+True
+ADCChannel(1)
+ADC(0)
+ADCChannel(1)
+ADC(0, bits=12)
+ADCChannel(1)
+ADCChannel(1, pin=GP3)
+True
+Exception
+Exception
+Exception
+Exception
+Exception
+Exception
+Exception
+Exception
+Exception
+Exception
+ADCChannel(1, pin=GP3)
+True