takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_Freescale/TARGET_K20XX/analogout_api.c@0:8fdf9a60065b, 2018-10-10 (annotated)

Committer:
kadonotakashi
Date:
Wed Oct 10 00:33:53 2018 +0000
Revision:
0:8fdf9a60065b
how to make mbed librry

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2006-2015 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16
kadonotakashi 0:8fdf9a60065b 17 #include "mbed_assert.h"
kadonotakashi 0:8fdf9a60065b 18 #include "analogout_api.h"
kadonotakashi 0:8fdf9a60065b 19
kadonotakashi 0:8fdf9a60065b 20 #if DEVICE_ANALOGOUT
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 #include "cmsis.h"
kadonotakashi 0:8fdf9a60065b 23 #include "pinmap.h"
kadonotakashi 0:8fdf9a60065b 24 #include "PeripheralPins.h"
kadonotakashi 0:8fdf9a60065b 25
kadonotakashi 0:8fdf9a60065b 26 #define RANGE_12BIT 0xFFF
kadonotakashi 0:8fdf9a60065b 27
kadonotakashi 0:8fdf9a60065b 28 void analogout_init(dac_t *obj, PinName pin) {
kadonotakashi 0:8fdf9a60065b 29 obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
kadonotakashi 0:8fdf9a60065b 30 MBED_ASSERT(obj->dac != (DACName)NC);
kadonotakashi 0:8fdf9a60065b 31
kadonotakashi 0:8fdf9a60065b 32 SIM->SCGC2 |= SIM_SCGC2_DAC0_MASK;
kadonotakashi 0:8fdf9a60065b 33
kadonotakashi 0:8fdf9a60065b 34 uint32_t port = (uint32_t)pin >> PORT_SHIFT;
kadonotakashi 0:8fdf9a60065b 35 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port);
kadonotakashi 0:8fdf9a60065b 36
kadonotakashi 0:8fdf9a60065b 37 DAC0->DAT[obj->dac].DATH = 0;
kadonotakashi 0:8fdf9a60065b 38 DAC0->DAT[obj->dac].DATL = 0;
kadonotakashi 0:8fdf9a60065b 39
kadonotakashi 0:8fdf9a60065b 40 DAC0->C1 = DAC_C1_DACBFMD_MASK; // One-Time Scan Mode
kadonotakashi 0:8fdf9a60065b 41
kadonotakashi 0:8fdf9a60065b 42 DAC0->C0 = DAC_C0_DACEN_MASK // Enable
kadonotakashi 0:8fdf9a60065b 43 | DAC_C0_DACSWTRG_MASK // Software Trigger
kadonotakashi 0:8fdf9a60065b 44 | DAC_C0_DACRFS_MASK; // VDDA selected
kadonotakashi 0:8fdf9a60065b 45
kadonotakashi 0:8fdf9a60065b 46 analogout_write_u16(obj, 0);
kadonotakashi 0:8fdf9a60065b 47 }
kadonotakashi 0:8fdf9a60065b 48
kadonotakashi 0:8fdf9a60065b 49 void analogout_free(dac_t *obj) {}
kadonotakashi 0:8fdf9a60065b 50
kadonotakashi 0:8fdf9a60065b 51 static inline void dac_write(dac_t *obj, int value) {
kadonotakashi 0:8fdf9a60065b 52 DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF);
kadonotakashi 0:8fdf9a60065b 53 DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF);
kadonotakashi 0:8fdf9a60065b 54 }
kadonotakashi 0:8fdf9a60065b 55
kadonotakashi 0:8fdf9a60065b 56 static inline int dac_read(dac_t *obj) {
kadonotakashi 0:8fdf9a60065b 57 return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL);
kadonotakashi 0:8fdf9a60065b 58 }
kadonotakashi 0:8fdf9a60065b 59
kadonotakashi 0:8fdf9a60065b 60 void analogout_write(dac_t *obj, float value) {
kadonotakashi 0:8fdf9a60065b 61 if (value < 0.0) {
kadonotakashi 0:8fdf9a60065b 62 dac_write(obj, 0);
kadonotakashi 0:8fdf9a60065b 63 } else if (value > 1.0) {
kadonotakashi 0:8fdf9a60065b 64 dac_write(obj, RANGE_12BIT);
kadonotakashi 0:8fdf9a60065b 65 } else {
kadonotakashi 0:8fdf9a60065b 66 dac_write(obj, value * (float)RANGE_12BIT);
kadonotakashi 0:8fdf9a60065b 67 }
kadonotakashi 0:8fdf9a60065b 68 }
kadonotakashi 0:8fdf9a60065b 69
kadonotakashi 0:8fdf9a60065b 70 void analogout_write_u16(dac_t *obj, uint16_t value) {
kadonotakashi 0:8fdf9a60065b 71 dac_write(obj, value >> 4); // 12-bit
kadonotakashi 0:8fdf9a60065b 72 }
kadonotakashi 0:8fdf9a60065b 73
kadonotakashi 0:8fdf9a60065b 74 float analogout_read(dac_t *obj) {
kadonotakashi 0:8fdf9a60065b 75 uint32_t value = dac_read(obj);
kadonotakashi 0:8fdf9a60065b 76 return (float)value * (1.0f / (float)RANGE_12BIT);
kadonotakashi 0:8fdf9a60065b 77 }
kadonotakashi 0:8fdf9a60065b 78
kadonotakashi 0:8fdf9a60065b 79 uint16_t analogout_read_u16(dac_t *obj) {
kadonotakashi 0:8fdf9a60065b 80 uint32_t value = dac_read(obj); // 12-bit
kadonotakashi 0:8fdf9a60065b 81 return (value << 4) | ((value >> 8) & 0x003F);
kadonotakashi 0:8fdf9a60065b 82 }
kadonotakashi 0:8fdf9a60065b 83
kadonotakashi 0:8fdf9a60065b 84 #endif