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Diff: targets/hal/TARGET_Atmel/TARGET_SAM21/analogin_api.c
- Revision:
- 613:bc40b8d2aec4
- Parent:
- 612:fba1c7dc54c0
- Child:
- 614:9d86c2ae5de0
--- a/targets/hal/TARGET_Atmel/TARGET_SAM21/analogin_api.c Tue Aug 18 15:00:09 2015 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,181 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "mbed_assert.h"
-#include "analogin_api.h"
-
-#include "cmsis.h"
-#include "pinmap.h"
-#include "PeripheralPins.h"
-#include "adc.h"
-#include "status_codes.h"
-
-struct adc_module adc_instance;
-
-void adc_configure_ain_pin(uint32_t pin)
-{
-#define PIN_INVALID_ADC_AIN 0xFFFFUL
-
- /* Pinmapping table for AINxx -> GPIO pin number */
- const uint32_t pinmapping[] = {
-#if (SAMD20E | SAMD21E)
- PIN_PA02B_ADC_AIN0, PIN_PA03B_ADC_AIN1,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA04B_ADC_AIN4, PIN_PA05B_ADC_AIN5,
- PIN_PA06B_ADC_AIN6, PIN_PA07B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA08B_ADC_AIN16, PIN_PA09B_ADC_AIN17,
- PIN_PA10B_ADC_AIN18, PIN_PA11B_ADC_AIN19,
-#elif (SAMD20G | SAMD21G)
- PIN_PA02B_ADC_AIN0, PIN_PA03B_ADC_AIN1,
- PIN_PB08B_ADC_AIN2, PIN_PB09B_ADC_AIN3,
- PIN_PA04B_ADC_AIN4, PIN_PA05B_ADC_AIN5,
- PIN_PA06B_ADC_AIN6, PIN_PA07B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PB02B_ADC_AIN10, PIN_PB03B_ADC_AIN11,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA08B_ADC_AIN16, PIN_PA09B_ADC_AIN17,
- PIN_PA10B_ADC_AIN18, PIN_PA11B_ADC_AIN19,
-#elif (SAMD20J | SAMD21J)
- PIN_PA02B_ADC_AIN0, PIN_PA03B_ADC_AIN1,
- PIN_PB08B_ADC_AIN2, PIN_PB09B_ADC_AIN3,
- PIN_PA04B_ADC_AIN4, PIN_PA05B_ADC_AIN5,
- PIN_PA06B_ADC_AIN6, PIN_PA07B_ADC_AIN7,
- PIN_PB00B_ADC_AIN8, PIN_PB01B_ADC_AIN9,
- PIN_PB02B_ADC_AIN10, PIN_PB03B_ADC_AIN11,
- PIN_PB04B_ADC_AIN12, PIN_PB05B_ADC_AIN13,
- PIN_PB06B_ADC_AIN14, PIN_PB07B_ADC_AIN15,
- PIN_PA08B_ADC_AIN16, PIN_PA09B_ADC_AIN17,
- PIN_PA10B_ADC_AIN18, PIN_PA11B_ADC_AIN19,
-#elif SAMR21E
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA06B_ADC_AIN6, PIN_PA07B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA08B_ADC_AIN16, PIN_PA09B_ADC_AIN17,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
-#elif SAMR21G
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA04B_ADC_AIN4, PIN_PA05B_ADC_AIN5,
- PIN_PA06B_ADC_AIN6, PIN_PA07B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PB02B_ADC_AIN10, PIN_PB03B_ADC_AIN11,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA08B_ADC_AIN16, PIN_PA09B_ADC_AIN17,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
-#elif (SAMD10C | SAMD11C)
- PIN_PA02B_ADC_AIN0, PIN_INVALID_ADC_AIN,
- PIN_PA04B_ADC_AIN2, PIN_PA05B_ADC_AIN3,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_PA14B_ADC_AIN6, PIN_PA15B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
-#elif (SAMD10DS | SAMD11DS)
- PIN_PA02B_ADC_AIN0, PIN_INVALID_ADC_AIN,
- PIN_PA04B_ADC_AIN2, PIN_PA05B_ADC_AIN3,
- PIN_PA06B_ADC_AIN4, PIN_PA07B_ADC_AIN5,
- PIN_PA14B_ADC_AIN6, PIN_PA15B_ADC_AIN7,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
-#elif (SAMD10DM | SAMD11DM)
- PIN_PA02B_ADC_AIN0, PIN_PA03B_ADC_AIN1,
- PIN_PA04B_ADC_AIN2, PIN_PA05B_ADC_AIN3,
- PIN_PA06B_ADC_AIN4, PIN_PA07B_ADC_AIN5,
- PIN_PA14B_ADC_AIN6, PIN_PA15B_ADC_AIN7,
- PIN_PA10B_ADC_AIN8, PIN_PA11B_ADC_AIN9,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
- PIN_INVALID_ADC_AIN, PIN_INVALID_ADC_AIN,
-#else
-# error ADC pin mappings are not defined for this device.
-#endif
- };
-
- uint32_t pin_map_result = PIN_INVALID_ADC_AIN;
-
- if (pin <= ADC_EXTCHANNEL_MSB) {
- pin_map_result = pinmapping[pin >> ADC_INPUTCTRL_MUXPOS_Pos];
-
- Assert(pin_map_result != PIN_INVALID_ADC_AIN);
-
- struct system_pinmux_config config;
- system_pinmux_get_config_defaults(&config);
-
- /* Analog functions are all on MUX setting B */
- config.input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
- config.mux_position = 1;
-
- system_pinmux_pin_set_config(pin_map_result, &config);
- }
-}
-
-void analogin_init(analogin_t *obj, PinName pin)
-{
- uint32_t pos_input;
- static uint8_t init_flag = 0;
-
- pos_input = pinmap_find_peripheral(pin, PinMap_ADC);
- MBED_ASSERT(pos_input != NC);
-
- adc_get_config_defaults(&(obj->config_adc));
- obj->config_adc.positive_input = pos_input;
- if (init_flag == 0) { // ADC init and enable to be done only once.
- adc_init(&adc_instance, ADC, &(obj->config_adc));
- adc_enable(&adc_instance);
- init_flag = 1;
- } else { // pin muxing
- adc_configure_ain_pin(obj->config_adc.positive_input);
- adc_configure_ain_pin(obj->config_adc.negative_input);
- }
-}
-
-uint16_t analogin_read_u16(analogin_t *obj)
-{
- uint16_t result;
- adc_set_positive_input(&adc_instance, obj->config_adc.positive_input);
- adc_set_negative_input(&adc_instance, obj->config_adc.negative_input);
- adc_start_conversion(&adc_instance);
- do {
- } while(adc_read(&(adc_instance), &result) == STATUS_BUSY); // 12 bit value
-
- return (uint16_t)((result * 65535) / 4095); // for normalizing to 16 bit value
-}
-
-float analogin_read(analogin_t *obj)
-{
- uint16_t value = analogin_read_u16(obj);
- return (float)value * (1.0f / (float)0xFFFF);
-}
-