shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_MCU_K64F/analogout_api.c@320:be04b2b1e3f2, 2014-09-11 (annotated)

Committer:
mbed_official
Date:
Thu Sep 11 17:00:08 2014 +0100
Revision:
320:be04b2b1e3f2
Parent:
targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/analogout_api.c@285:31249416b6f9 
Synchronized with git revision c372035d60ac16c22e1313348a9e3f47293dc6b8



Full URL: https://github.com/mbedmicro/mbed/commit/c372035d60ac16c22e1313348a9e3f47293dc6b8/



Add derivative support to K64F and updates for MTS_GAMBIT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 146:f64d43ff0c18 1 /* mbed Microcontroller Library
mbed_official 146:f64d43ff0c18 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 146:f64d43ff0c18 3 *
mbed_official 146:f64d43ff0c18 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 146:f64d43ff0c18 5 * you may not use this file except in compliance with the License.
mbed_official 146:f64d43ff0c18 6 * You may obtain a copy of the License at
mbed_official 146:f64d43ff0c18 7 *
mbed_official 146:f64d43ff0c18 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 146:f64d43ff0c18 9 *
mbed_official 146:f64d43ff0c18 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 146:f64d43ff0c18 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 146:f64d43ff0c18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 146:f64d43ff0c18 13 * See the License for the specific language governing permissions and
mbed_official 146:f64d43ff0c18 14 * limitations under the License.
mbed_official 146:f64d43ff0c18 15 */
mbed_official 146:f64d43ff0c18 16 #include "analogout_api.h"
mbed_official 146:f64d43ff0c18 17
mbed_official 267:8673334f2cbe 18 #if DEVICE_ANALOGOUT
mbed_official 267:8673334f2cbe 19
mbed_official 146:f64d43ff0c18 20 #include "cmsis.h"
mbed_official 146:f64d43ff0c18 21 #include "pinmap.h"
mbed_official 285:31249416b6f9 22 #include "mbed_error.h"
mbed_official 265:9632ea190e16 23 #include "PeripheralPins.h"
mbed_official 146:f64d43ff0c18 24
mbed_official 146:f64d43ff0c18 25 #define RANGE_12BIT 0xFFF
mbed_official 146:f64d43ff0c18 26
mbed_official 146:f64d43ff0c18 27 void analogout_init(dac_t *obj, PinName pin) {
mbed_official 146:f64d43ff0c18 28 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 146:f64d43ff0c18 29 if (obj->dac == (DACName)NC) {
mbed_official 146:f64d43ff0c18 30 error("DAC pin mapping failed");
mbed_official 146:f64d43ff0c18 31 }
mbed_official 146:f64d43ff0c18 32
mbed_official 146:f64d43ff0c18 33 SIM->SCGC2 |= SIM_SCGC2_DAC0_MASK;
mbed_official 146:f64d43ff0c18 34
mbed_official 146:f64d43ff0c18 35 DAC0->DAT[obj->dac].DATH = 0;
mbed_official 146:f64d43ff0c18 36 DAC0->DAT[obj->dac].DATL = 0;
mbed_official 146:f64d43ff0c18 37
mbed_official 146:f64d43ff0c18 38 DAC0->C1 = DAC_C1_DACBFMD(2); // One-Time Scan Mode
mbed_official 146:f64d43ff0c18 39
mbed_official 146:f64d43ff0c18 40 DAC0->C0 = DAC_C0_DACEN_MASK // Enable
mbed_official 146:f64d43ff0c18 41 | DAC_C0_DACSWTRG_MASK // Software Trigger
mbed_official 146:f64d43ff0c18 42 | DAC_C0_DACRFS_MASK; // VDDA selected
mbed_official 146:f64d43ff0c18 43
mbed_official 146:f64d43ff0c18 44 analogout_write_u16(obj, 0);
mbed_official 146:f64d43ff0c18 45 }
mbed_official 146:f64d43ff0c18 46
mbed_official 146:f64d43ff0c18 47 void analogout_free(dac_t *obj) {}
mbed_official 146:f64d43ff0c18 48
mbed_official 146:f64d43ff0c18 49 static inline void dac_write(dac_t *obj, int value) {
mbed_official 146:f64d43ff0c18 50 DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF);
mbed_official 146:f64d43ff0c18 51 DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF);
mbed_official 146:f64d43ff0c18 52 }
mbed_official 146:f64d43ff0c18 53
mbed_official 146:f64d43ff0c18 54 static inline int dac_read(dac_t *obj) {
mbed_official 146:f64d43ff0c18 55 return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL);
mbed_official 146:f64d43ff0c18 56 }
mbed_official 146:f64d43ff0c18 57
mbed_official 146:f64d43ff0c18 58 void analogout_write(dac_t *obj, float value) {
mbed_official 146:f64d43ff0c18 59 if (value < 0.0f) {
mbed_official 146:f64d43ff0c18 60 dac_write(obj, 0);
mbed_official 146:f64d43ff0c18 61 } else if (value > 1.0f) {
mbed_official 146:f64d43ff0c18 62 dac_write(obj, RANGE_12BIT);
mbed_official 146:f64d43ff0c18 63 } else {
mbed_official 146:f64d43ff0c18 64 dac_write(obj, value * (float)RANGE_12BIT);
mbed_official 146:f64d43ff0c18 65 }
mbed_official 146:f64d43ff0c18 66 }
mbed_official 146:f64d43ff0c18 67
mbed_official 146:f64d43ff0c18 68 void analogout_write_u16(dac_t *obj, uint16_t value) {
mbed_official 146:f64d43ff0c18 69 dac_write(obj, value >> 4); // 12-bit
mbed_official 146:f64d43ff0c18 70 }
mbed_official 146:f64d43ff0c18 71
mbed_official 146:f64d43ff0c18 72 float analogout_read(dac_t *obj) {
mbed_official 146:f64d43ff0c18 73 uint32_t value = dac_read(obj);
mbed_official 146:f64d43ff0c18 74 return (float)value * (1.0f / (float)RANGE_12BIT);
mbed_official 146:f64d43ff0c18 75 }
mbed_official 146:f64d43ff0c18 76
mbed_official 146:f64d43ff0c18 77 uint16_t analogout_read_u16(dac_t *obj) {
mbed_official 146:f64d43ff0c18 78 uint32_t value = dac_read(obj); // 12-bit
mbed_official 146:f64d43ff0c18 79 return (value << 4) | ((value >> 8) & 0x003F);
mbed_official 146:f64d43ff0c18 80 }
mbed_official 267:8673334f2cbe 81
mbed_official 267:8673334f2cbe 82 #endif