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@149:1fb5f62b92bd, 2014-04-03 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Apr 03 11:45:06 2014 +0100
- Revision:
- 149:1fb5f62b92bd
- Parent:
- targets/hal/TARGET_Freescale/TARGET_KSDK_MCUS/TARGET_K64F/analogout_api.c@146:f64d43ff0c18
- Child:
- 250:a49055e7a707
Synchronized with git revision 220c0bb39ceee40016e1e86350c058963d01ed42
Full URL: https://github.com/mbedmicro/mbed/commit/220c0bb39ceee40016e1e86350c058963d01ed42/
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 | 146:f64d43ff0c18 | 20 | #include "error.h" |
mbed_official | 146:f64d43ff0c18 | 21 | |
mbed_official | 146:f64d43ff0c18 | 22 | #define RANGE_12BIT 0xFFF |
mbed_official | 146:f64d43ff0c18 | 23 | |
mbed_official | 146:f64d43ff0c18 | 24 | const PinMap PinMap_DAC[] = { |
mbed_official | 146:f64d43ff0c18 | 25 | {DAC0_OUT, DAC_0, 0}, |
mbed_official | 146:f64d43ff0c18 | 26 | {NC , NC , 0} |
mbed_official | 146:f64d43ff0c18 | 27 | }; |
mbed_official | 146:f64d43ff0c18 | 28 | |
mbed_official | 146:f64d43ff0c18 | 29 | void analogout_init(dac_t *obj, PinName pin) { |
mbed_official | 146:f64d43ff0c18 | 30 | obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); |
mbed_official | 146:f64d43ff0c18 | 31 | if (obj->dac == (DACName)NC) { |
mbed_official | 146:f64d43ff0c18 | 32 | error("DAC pin mapping failed"); |
mbed_official | 146:f64d43ff0c18 | 33 | } |
mbed_official | 146:f64d43ff0c18 | 34 | |
mbed_official | 146:f64d43ff0c18 | 35 | SIM->SCGC2 |= SIM_SCGC2_DAC0_MASK; |
mbed_official | 146:f64d43ff0c18 | 36 | |
mbed_official | 146:f64d43ff0c18 | 37 | DAC0->DAT[obj->dac].DATH = 0; |
mbed_official | 146:f64d43ff0c18 | 38 | DAC0->DAT[obj->dac].DATL = 0; |
mbed_official | 146:f64d43ff0c18 | 39 | |
mbed_official | 146:f64d43ff0c18 | 40 | DAC0->C1 = DAC_C1_DACBFMD(2); // One-Time Scan Mode |
mbed_official | 146:f64d43ff0c18 | 41 | |
mbed_official | 146:f64d43ff0c18 | 42 | DAC0->C0 = DAC_C0_DACEN_MASK // Enable |
mbed_official | 146:f64d43ff0c18 | 43 | | DAC_C0_DACSWTRG_MASK // Software Trigger |
mbed_official | 146:f64d43ff0c18 | 44 | | DAC_C0_DACRFS_MASK; // VDDA selected |
mbed_official | 146:f64d43ff0c18 | 45 | |
mbed_official | 146:f64d43ff0c18 | 46 | analogout_write_u16(obj, 0); |
mbed_official | 146:f64d43ff0c18 | 47 | } |
mbed_official | 146:f64d43ff0c18 | 48 | |
mbed_official | 146:f64d43ff0c18 | 49 | void analogout_free(dac_t *obj) {} |
mbed_official | 146:f64d43ff0c18 | 50 | |
mbed_official | 146:f64d43ff0c18 | 51 | static inline void dac_write(dac_t *obj, int value) { |
mbed_official | 146:f64d43ff0c18 | 52 | DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF); |
mbed_official | 146:f64d43ff0c18 | 53 | DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF); |
mbed_official | 146:f64d43ff0c18 | 54 | } |
mbed_official | 146:f64d43ff0c18 | 55 | |
mbed_official | 146:f64d43ff0c18 | 56 | static inline int dac_read(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 57 | return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL); |
mbed_official | 146:f64d43ff0c18 | 58 | } |
mbed_official | 146:f64d43ff0c18 | 59 | |
mbed_official | 146:f64d43ff0c18 | 60 | void analogout_write(dac_t *obj, float value) { |
mbed_official | 146:f64d43ff0c18 | 61 | if (value < 0.0f) { |
mbed_official | 146:f64d43ff0c18 | 62 | dac_write(obj, 0); |
mbed_official | 146:f64d43ff0c18 | 63 | } else if (value > 1.0f) { |
mbed_official | 146:f64d43ff0c18 | 64 | dac_write(obj, RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 65 | } else { |
mbed_official | 146:f64d43ff0c18 | 66 | dac_write(obj, value * (float)RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 67 | } |
mbed_official | 146:f64d43ff0c18 | 68 | } |
mbed_official | 146:f64d43ff0c18 | 69 | |
mbed_official | 146:f64d43ff0c18 | 70 | void analogout_write_u16(dac_t *obj, uint16_t value) { |
mbed_official | 146:f64d43ff0c18 | 71 | dac_write(obj, value >> 4); // 12-bit |
mbed_official | 146:f64d43ff0c18 | 72 | } |
mbed_official | 146:f64d43ff0c18 | 73 | |
mbed_official | 146:f64d43ff0c18 | 74 | float analogout_read(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 75 | uint32_t value = dac_read(obj); |
mbed_official | 146:f64d43ff0c18 | 76 | return (float)value * (1.0f / (float)RANGE_12BIT); |
mbed_official | 146:f64d43ff0c18 | 77 | } |
mbed_official | 146:f64d43ff0c18 | 78 | |
mbed_official | 146:f64d43ff0c18 | 79 | uint16_t analogout_read_u16(dac_t *obj) { |
mbed_official | 146:f64d43ff0c18 | 80 | uint32_t value = dac_read(obj); // 12-bit |
mbed_official | 146:f64d43ff0c18 | 81 | return (value << 4) | ((value >> 8) & 0x003F); |
mbed_official | 146:f64d43ff0c18 | 82 | } |