mirror of https://github.com/ARMmbed/mbed-os.git
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/* mbed Microcontroller Library
|
|
* (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2018 All rights reserved
|
|
*
|
|
* 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 "analogout_api.h"
|
|
#include "PeripheralNames.h"
|
|
#include "pinmap.h"
|
|
#include "mbed_wait_api.h"
|
|
#include "gpio_include.h"
|
|
|
|
static const PinMap PinMap_DAC[] = {
|
|
{DAC0, DAC_A0, PIN_DATA(0, 3)},
|
|
{DAC1, DAC_A1, PIN_DATA(0, 3)},
|
|
{NC, NC, 0}
|
|
};
|
|
|
|
void analogout_init(dac_t *obj, PinName pin)
|
|
{
|
|
obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC); // Check that pin belong to DAC module
|
|
MBED_ASSERT(obj->dac != (DACName)NC);
|
|
|
|
pinmap_pinout(pin, PinMap_DAC); // Set pin function as DAC
|
|
TSB_CG_FSYSENA_IPENA06 = ENABLE;
|
|
if (obj->dac == DAC_A0) { // Compute handler
|
|
obj->handler = TSB_DA0;
|
|
TSB_CG_FSYSENB_IPENB01 = ENABLE;
|
|
} else {
|
|
if (obj->dac == DAC_A1) {
|
|
obj->handler = TSB_DA1;
|
|
TSB_CG_FSYSENB_IPENB02 = ENABLE;
|
|
} else {
|
|
obj->handler = NULL;
|
|
}
|
|
}
|
|
obj->handler->CTL = DAC_STOP;
|
|
}
|
|
|
|
void analogout_free(dac_t *obj)
|
|
{
|
|
obj->handler->CTL = DAC_STOP;
|
|
}
|
|
|
|
void analogout_write(dac_t *obj, float value)
|
|
{
|
|
uint8_t outputcode = 0;
|
|
|
|
// Enable DAC
|
|
obj->handler->CTL = DAC_START;
|
|
|
|
if (value < 0.0f) {
|
|
value = 0.0f;
|
|
} else {
|
|
if (value >= 1.0f) {
|
|
value = 1.0f;
|
|
}
|
|
}
|
|
|
|
outputcode = (uint8_t)(value * 255.0f);
|
|
obj->handler->REG = outputcode;
|
|
wait_ms(3);
|
|
}
|
|
|
|
void analogout_write_u16(dac_t *obj, uint16_t value)
|
|
{
|
|
// Enable DAC
|
|
obj->handler->CTL = DAC_START;
|
|
obj->handler->REG = (uint8_t)(value & 0xFF);
|
|
wait_ms(3);
|
|
}
|
|
|
|
float analogout_read(dac_t *obj)
|
|
{
|
|
float result = 0.0;
|
|
uint32_t value = 0;
|
|
|
|
value = ((obj->handler->REG) & (0xFF));
|
|
result = ((float)value / 255.0f);
|
|
|
|
return result;
|
|
}
|
|
|
|
uint16_t analogout_read_u16(dac_t *obj)
|
|
{
|
|
uint16_t value = 0;
|
|
|
|
value = (uint16_t)((obj->handler->REG) & (0xFF));
|
|
|
|
return value;
|
|
}
|