mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/analogout_api.c@265:9632ea190e16, 2014-07-23 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jul 23 21:15:06 2014 +0100
- Revision:
- 265:9632ea190e16
- Parent:
- 251:de9a1e4ffd79
- Child:
- 267:8673334f2cbe
Synchronized with git revision 7a5896cba254ab45829b43f6cef5563706ebba2b
Full URL: https://github.com/mbedmicro/mbed/commit/7a5896cba254ab45829b43f6cef5563706ebba2b/
[MTS_GAMBIT] Add new target support
Who changed what in which revision?
User | Revision | Line number | New 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 | 146:f64d43ff0c18 | 18 | #include "cmsis.h" |
mbed_official | 146:f64d43ff0c18 | 19 | #include "pinmap.h" |
mbed_official | 251:de9a1e4ffd79 | 20 | #include "error.h" |
mbed_official | 265:9632ea190e16 | 21 | #include "PeripheralPins.h" |
mbed_official | 146:f64d43ff0c18 | 22 | |
mbed_official | 146:f64d43ff0c18 | 23 | #define RANGE_12BIT 0xFFF |
mbed_official | 146:f64d43ff0c18 | 24 | |
mbed_official | 146:f64d43ff0c18 | 25 | void analogout_init(dac_t *obj, PinName pin) { |
mbed_official | 146:f64d43ff0c18 | 26 | obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); |
mbed_official | 146:f64d43ff0c18 | 27 | if (obj->dac == (DACName)NC) { |
mbed_official | 146:f64d43ff0c18 | 28 | error("DAC pin mapping failed"); |
mbed_official | 146:f64d43ff0c18 | 29 | } |
mbed_official | 146:f64d43ff0c18 | 30 | |
mbed_official | 146:f64d43ff0c18 | 31 | SIM->SCGC2 |= SIM_SCGC2_DAC0_MASK; |
mbed_official | 146:f64d43ff0c18 | 32 | |
mbed_official | 146:f64d43ff0c18 | 33 | DAC0->DAT[obj->dac].DATH = 0; |
mbed_official | 146:f64d43ff0c18 | 34 | DAC0->DAT[obj->dac].DATL = 0; |
mbed_official | 146:f64d43ff0c18 | 35 | |
mbed_official | 146:f64d43ff0c18 | 36 | DAC0->C1 = DAC_C1_DACBFMD(2); // One-Time Scan Mode |
mbed_official | 146:f64d43ff0c18 | 37 | |
mbed_official | 146:f64d43ff0c18 | 38 | DAC0->C0 = DAC_C0_DACEN_MASK // Enable |
mbed_official | 146:f64d43ff0c18 | 39 | | DAC_C0_DACSWTRG_MASK // Software Trigger |
mbed_official | 146:f64d43ff0c18 | 40 | | DAC_C0_DACRFS_MASK; // VDDA selected |
mbed_official | 146:f64d43ff0c18 | 41 | |
mbed_official | 146:f64d43ff0c18 | 42 | analogout_write_u16(obj, 0); |
mbed_official | 146:f64d43ff0c18 | 43 | } |
mbed_official | 146:f64d43ff0c18 | 44 | |
mbed_official | 146:f64d43ff0c18 | 45 | void analogout_free(dac_t *obj) {} |
mbed_official | 146:f64d43ff0c18 | 46 | |
mbed_official | 146:f64d43ff0c18 | 47 | static inline void dac_write(dac_t *obj, int value) { |
mbed_official | 146:f64d43ff0c18 | 48 | DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF); |
mbed_official | 146:f64d43ff0c18 | 49 | DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF); |
mbed_official | 146:f64d43ff0c18 | 50 | } |
mbed_official | 146:f64d43ff0c18 | 51 | |
mbed_official | 146:f64d43ff0c18 | 52 | static inline int dac_read(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 53 | return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL); |
mbed_official | 146:f64d43ff0c18 | 54 | } |
mbed_official | 146:f64d43ff0c18 | 55 | |
mbed_official | 146:f64d43ff0c18 | 56 | void analogout_write(dac_t *obj, float value) { |
mbed_official | 146:f64d43ff0c18 | 57 | if (value < 0.0f) { |
mbed_official | 146:f64d43ff0c18 | 58 | dac_write(obj, 0); |
mbed_official | 146:f64d43ff0c18 | 59 | } else if (value > 1.0f) { |
mbed_official | 146:f64d43ff0c18 | 60 | dac_write(obj, RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 61 | } else { |
mbed_official | 146:f64d43ff0c18 | 62 | dac_write(obj, value * (float)RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 63 | } |
mbed_official | 146:f64d43ff0c18 | 64 | } |
mbed_official | 146:f64d43ff0c18 | 65 | |
mbed_official | 146:f64d43ff0c18 | 66 | void analogout_write_u16(dac_t *obj, uint16_t value) { |
mbed_official | 146:f64d43ff0c18 | 67 | dac_write(obj, value >> 4); // 12-bit |
mbed_official | 146:f64d43ff0c18 | 68 | } |
mbed_official | 146:f64d43ff0c18 | 69 | |
mbed_official | 146:f64d43ff0c18 | 70 | float analogout_read(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 71 | uint32_t value = dac_read(obj); |
mbed_official | 146:f64d43ff0c18 | 72 | return (float)value * (1.0f / (float)RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 73 | } |
mbed_official | 146:f64d43ff0c18 | 74 | |
mbed_official | 146:f64d43ff0c18 | 75 | uint16_t analogout_read_u16(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 76 | uint32_t value = dac_read(obj); // 12-bit |
mbed_official | 146:f64d43ff0c18 | 77 | return (value << 4) | ((value >> 8) & 0x003F); |
mbed_official | 146:f64d43ff0c18 | 78 | } |