Renesas / mbed-src_GR-PEACH_rev_b

mbed library sources for GR-PEACH rev.B.

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_KLXX/analogout_api.c@514:cf59050bad8e, 2015-04-15 (annotated)

Committer:
RyoheiHagimoto
Date:
Wed Apr 15 01:34:29 2015 +0000
Revision:
514:cf59050bad8e
Parent:
227:7bd0639b8911 
mbed library sources for GR-PEACH rev.B.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 82:0b31dbcd4769 1 /* mbed Microcontroller Library
mbed_official 82:0b31dbcd4769 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 82:0b31dbcd4769 3 *
mbed_official 82:0b31dbcd4769 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 82:0b31dbcd4769 5 * you may not use this file except in compliance with the License.
mbed_official 82:0b31dbcd4769 6 * You may obtain a copy of the License at
mbed_official 82:0b31dbcd4769 7 *
mbed_official 82:0b31dbcd4769 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 82:0b31dbcd4769 9 *
mbed_official 82:0b31dbcd4769 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 82:0b31dbcd4769 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 82:0b31dbcd4769 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 82:0b31dbcd4769 13 * See the License for the specific language governing permissions and
mbed_official 82:0b31dbcd4769 14 * limitations under the License.
mbed_official 82:0b31dbcd4769 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 82:0b31dbcd4769 17 #include "analogout_api.h"
mbed_official 82:0b31dbcd4769 18
mbed_official 82:0b31dbcd4769 19 #include "cmsis.h"
mbed_official 82:0b31dbcd4769 20 #include "pinmap.h"
mbed_official 82:0b31dbcd4769 21 #include "PeripheralPins.h"
mbed_official 82:0b31dbcd4769 22
mbed_official 82:0b31dbcd4769 23 #define RANGE_12BIT 0xFFF
mbed_official 82:0b31dbcd4769 24
mbed_official 82:0b31dbcd4769 25 void analogout_init(dac_t *obj, PinName pin) {
mbed_official 82:0b31dbcd4769 26 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 227:7bd0639b8911 27 MBED_ASSERT(obj->dac != (DACName)NC);
mbed_official 82:0b31dbcd4769 28
mbed_official 82:0b31dbcd4769 29 SIM->SCGC6 |= SIM_SCGC6_DAC0_MASK;
mbed_official 82:0b31dbcd4769 30
mbed_official 82:0b31dbcd4769 31 uint32_t port = (uint32_t)pin >> PORT_SHIFT;
mbed_official 82:0b31dbcd4769 32 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port);
mbed_official 82:0b31dbcd4769 33
mbed_official 82:0b31dbcd4769 34 DAC0->DAT[obj->dac].DATH = 0;
mbed_official 82:0b31dbcd4769 35 DAC0->DAT[obj->dac].DATL = 0;
mbed_official 82:0b31dbcd4769 36
mbed_official 82:0b31dbcd4769 37 DAC0->C1 = DAC_C1_DACBFMD_MASK; // One-Time Scan Mode
mbed_official 82:0b31dbcd4769 38
mbed_official 82:0b31dbcd4769 39 DAC0->C0 = DAC_C0_DACEN_MASK // Enable
mbed_official 82:0b31dbcd4769 40 | DAC_C0_DACSWTRG_MASK; // Software Trigger
mbed_official 82:0b31dbcd4769 41
mbed_official 82:0b31dbcd4769 42 pinmap_pinout(pin, PinMap_DAC);
mbed_official 82:0b31dbcd4769 43
mbed_official 82:0b31dbcd4769 44 analogout_write_u16(obj, 0);
mbed_official 82:0b31dbcd4769 45 }
mbed_official 82:0b31dbcd4769 46
mbed_official 82:0b31dbcd4769 47 void analogout_free(dac_t *obj) {}
mbed_official 82:0b31dbcd4769 48
mbed_official 82:0b31dbcd4769 49 static inline void dac_write(dac_t *obj, int value) {
mbed_official 82:0b31dbcd4769 50 DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF);
mbed_official 82:0b31dbcd4769 51 DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF);
mbed_official 82:0b31dbcd4769 52 }
mbed_official 82:0b31dbcd4769 53
mbed_official 82:0b31dbcd4769 54 static inline int dac_read(dac_t *obj) {
mbed_official 82:0b31dbcd4769 55 return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL);
mbed_official 82:0b31dbcd4769 56 }
mbed_official 82:0b31dbcd4769 57
mbed_official 82:0b31dbcd4769 58 void analogout_write(dac_t *obj, float value) {
mbed_official 82:0b31dbcd4769 59 if (value < 0.0) {
mbed_official 82:0b31dbcd4769 60 dac_write(obj, 0);
mbed_official 82:0b31dbcd4769 61 } else if (value > 1.0) {
mbed_official 82:0b31dbcd4769 62 dac_write(obj, RANGE_12BIT);
mbed_official 82:0b31dbcd4769 63 } else {
mbed_official 82:0b31dbcd4769 64 dac_write(obj, value * (float)RANGE_12BIT);
mbed_official 82:0b31dbcd4769 65 }
mbed_official 82:0b31dbcd4769 66 }
mbed_official 82:0b31dbcd4769 67
mbed_official 82:0b31dbcd4769 68 void analogout_write_u16(dac_t *obj, uint16_t value) {
mbed_official 82:0b31dbcd4769 69 dac_write(obj, value >> 4); // 12-bit
mbed_official 82:0b31dbcd4769 70 }
mbed_official 82:0b31dbcd4769 71
mbed_official 82:0b31dbcd4769 72 float analogout_read(dac_t *obj) {
mbed_official 82:0b31dbcd4769 73 uint32_t value = dac_read(obj);
mbed_official 82:0b31dbcd4769 74 return (float)value * (1.0f / (float)RANGE_12BIT);
mbed_official 82:0b31dbcd4769 75 }
mbed_official 82:0b31dbcd4769 76
mbed_official 82:0b31dbcd4769 77 uint16_t analogout_read_u16(dac_t *obj) {
mbed_official 82:0b31dbcd4769 78 uint32_t value = dac_read(obj); // 12-bit
mbed_official 82:0b31dbcd4769 79 return (value << 4) | ((value >> 8) & 0x003F);
mbed_official 82:0b31dbcd4769 80 }