X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=tmk_core%2Ftool%2Fmbed%2Fmbed-sdk%2Flibraries%2Fmbed%2Ftargets%2Fhal%2FTARGET_NXP%2FTARGET_LPC82X%2Fanalogin_api.c;fp=tmk_core%2Ftool%2Fmbed%2Fmbed-sdk%2Flibraries%2Fmbed%2Ftargets%2Fhal%2FTARGET_NXP%2FTARGET_LPC82X%2Fanalogin_api.c;h=0000000000000000000000000000000000000000;hb=db32864ce7029d758f57729cc2f75e051a28d0a2;hp=786be8ba06533b6191e472a12051449840f9fe04;hpb=1923cffd41d9d71cd9f434092654dba05513137b;p=qmk_firmware.git diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/analogin_api.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/analogin_api.c deleted file mode 100644 index 786be8ba0..000000000 --- a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/analogin_api.c +++ /dev/null @@ -1,131 +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 "PeripheralNames.h" - -#if DEVICE_ANALOGIN - -#define ANALOGIN_MEDIAN_FILTER 1 - -#define ADC_RANGE 0xFFF - -static const PinMap PinMap_ADC[] = { - {P0_7 , ADC_0, 0}, - {P0_6 , ADC_1, 0}, - {P0_14, ADC_2, 0}, - {P0_23, ADC_3, 0}, - {P0_22, ADC_4, 0}, - {P0_21, ADC_5, 0}, - {P0_20, ADC_6, 0}, - {P0_19, ADC_7, 0}, - {P0_18, ADC_8, 0}, - {P0_17, ADC_9, 0}, - {P0_13, ADC_10,0}, - {P0_4 , ADC_11,0}, -}; - -void analogin_init(analogin_t *obj, PinName pin) -{ - obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); - MBED_ASSERT(obj->adc != (ADCName)NC); - - LPC_SYSCON->SYSAHBCLKCTRL |= (1UL << 6); - // pin enable - LPC_SWM->PINENABLE0 &= ~(1UL << (13 + obj->adc)); - // configure GPIO as input - LPC_GPIO_PORT->DIR0 &= ~(1UL << (pin >> PIN_SHIFT)); - - LPC_SYSCON->PDRUNCFG &= ~(1 << 4); - LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 24); - - __IO LPC_ADC_Type *adc_reg = LPC_ADC; - - // determine the system clock divider for a 500kHz ADC clock during calibration - uint32_t clkdiv = (SystemCoreClock / 500000) - 1; - - // perform a self-calibration - adc_reg->CTRL = (1UL << 30) | (clkdiv & 0xFF); - while ((adc_reg->CTRL & (1UL << 30)) != 0); -} - -static inline uint32_t adc_read(analogin_t *obj) -{ - uint32_t channels; - __IO LPC_ADC_Type *adc_reg = LPC_ADC; - - channels = (obj->adc & 0x1F); - - // select channel - adc_reg->SEQA_CTRL &= ~(0xFFF); - adc_reg->SEQA_CTRL |= (1UL << channels); - - // start conversion and sequence enable - adc_reg->SEQA_CTRL |= ((1UL << 26) | (1UL << 31)); - - // Repeatedly get the sample data until DONE bit - volatile uint32_t data; - do { - data = adc_reg->SEQA_GDAT; - } while ((data & (1UL << 31)) == 0); - - // Stop conversion - adc_reg->SEQA_CTRL &= ~(1UL << 31); - - return ((data >> 4) & ADC_RANGE); -} - -static inline void order(uint32_t *a, uint32_t *b) -{ - if (*a > *b) { - uint32_t t = *a; - *a = *b; - *b = t; - } -} - -static inline uint32_t adc_read_u32(analogin_t *obj) -{ - uint32_t value; -#if ANALOGIN_MEDIAN_FILTER - uint32_t v1 = adc_read(obj); - uint32_t v2 = adc_read(obj); - uint32_t v3 = adc_read(obj); - order(&v1, &v2); - order(&v2, &v3); - order(&v1, &v2); - value = v2; -#else - value = adc_read(obj); -#endif - return value; -} - -uint16_t analogin_read_u16(analogin_t *obj) -{ - uint32_t value = adc_read_u32(obj); - return (value << 4) | ((value >> 8) & 0x000F); // 12 bit -} - -float analogin_read(analogin_t *obj) -{ - uint32_t value = adc_read_u32(obj); - return (float)value * (1.0f / (float)ADC_RANGE); -} - -#endif