mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/hal/TARGET_Freescale/TARGET_KLXX/analogout_api.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 0:9b334a45a8ff
--- a/targets/hal/TARGET_Freescale/TARGET_KLXX/analogout_api.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_KLXX/analogout_api.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,80 +1,80 @@ -/* mbed Microcontroller Library - * Copyright (c) 2006-2013 ARM Limited - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include "mbed_assert.h" -#include "analogout_api.h" - -#include "cmsis.h" -#include "pinmap.h" -#include "PeripheralPins.h" - -#define RANGE_12BIT 0xFFF - -void analogout_init(dac_t *obj, PinName pin) { - obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); - MBED_ASSERT(obj->dac != (DACName)NC); - - SIM->SCGC6 |= SIM_SCGC6_DAC0_MASK; - - uint32_t port = (uint32_t)pin >> PORT_SHIFT; - SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port); - - DAC0->DAT[obj->dac].DATH = 0; - DAC0->DAT[obj->dac].DATL = 0; - - DAC0->C1 = DAC_C1_DACBFMD_MASK; // One-Time Scan Mode - - DAC0->C0 = DAC_C0_DACEN_MASK // Enable - | DAC_C0_DACSWTRG_MASK; // Software Trigger - - pinmap_pinout(pin, PinMap_DAC); - - analogout_write_u16(obj, 0); -} - -void analogout_free(dac_t *obj) {} - -static inline void dac_write(dac_t *obj, int value) { - DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF); - DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF); -} - -static inline int dac_read(dac_t *obj) { - return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL); -} - -void analogout_write(dac_t *obj, float value) { - if (value < 0.0) { - dac_write(obj, 0); - } else if (value > 1.0) { - dac_write(obj, RANGE_12BIT); - } else { - dac_write(obj, value * (float)RANGE_12BIT); - } -} - -void analogout_write_u16(dac_t *obj, uint16_t value) { - dac_write(obj, value >> 4); // 12-bit -} - -float analogout_read(dac_t *obj) { - uint32_t value = dac_read(obj); - return (float)value * (1.0f / (float)RANGE_12BIT); -} - -uint16_t analogout_read_u16(dac_t *obj) { - uint32_t value = dac_read(obj); // 12-bit - return (value << 4) | ((value >> 8) & 0x003F); -} +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "mbed_assert.h" +#include "analogout_api.h" + +#include "cmsis.h" +#include "pinmap.h" +#include "PeripheralPins.h" + +#define RANGE_12BIT 0xFFF + +void analogout_init(dac_t *obj, PinName pin) { + obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); + MBED_ASSERT(obj->dac != (DACName)NC); + + SIM->SCGC6 |= SIM_SCGC6_DAC0_MASK; + + uint32_t port = (uint32_t)pin >> PORT_SHIFT; + SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port); + + DAC0->DAT[obj->dac].DATH = 0; + DAC0->DAT[obj->dac].DATL = 0; + + DAC0->C1 = DAC_C1_DACBFMD_MASK; // One-Time Scan Mode + + DAC0->C0 = DAC_C0_DACEN_MASK // Enable + | DAC_C0_DACSWTRG_MASK; // Software Trigger + + pinmap_pinout(pin, PinMap_DAC); + + analogout_write_u16(obj, 0); +} + +void analogout_free(dac_t *obj) {} + +static inline void dac_write(dac_t *obj, int value) { + DAC0->DAT[obj->dac].DATL = (uint8_t)( value & 0xFF); + DAC0->DAT[obj->dac].DATH = (uint8_t)((value >> 8) & 0xFF); +} + +static inline int dac_read(dac_t *obj) { + return ((DAC0->DAT[obj->dac].DATH << 8) | DAC0->DAT[obj->dac].DATL); +} + +void analogout_write(dac_t *obj, float value) { + if (value < 0.0) { + dac_write(obj, 0); + } else if (value > 1.0) { + dac_write(obj, RANGE_12BIT); + } else { + dac_write(obj, value * (float)RANGE_12BIT); + } +} + +void analogout_write_u16(dac_t *obj, uint16_t value) { + dac_write(obj, value >> 4); // 12-bit +} + +float analogout_read(dac_t *obj) { + uint32_t value = dac_read(obj); + return (float)value * (1.0f / (float)RANGE_12BIT); +} + +uint16_t analogout_read_u16(dac_t *obj) { + uint32_t value = dac_read(obj); // 12-bit + return (value << 4) | ((value >> 8) & 0x003F); +}