mirror of
https://github.com/eclipse/upm.git
synced 2025-03-19 23:17:29 +03:00
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
|
|
* Author: Abhishek Malik <abhishek.malik@intel.com>
|
|
* Copyright (c) 2017 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#include "veml6070.h"
|
|
|
|
veml6070_context veml6070_init(uint8_t bus) {
|
|
// make sure MRAA is initialized
|
|
int mraa_rv;
|
|
if ((mraa_rv = mraa_init()) != MRAA_SUCCESS)
|
|
{
|
|
printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv);
|
|
return NULL;
|
|
}
|
|
|
|
veml6070_context dev =
|
|
(veml6070_context) malloc(sizeof(struct _veml6070_context));
|
|
|
|
if (!dev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
dev->i2c_bus_number = bus;
|
|
// Setting up 2 contexts for the 2 addresses
|
|
dev->address_seq1 = VEML6070_SEQ1_DATA_BUF_REG;
|
|
dev->address_seq2 = VEML6070_SEQ2_DATA_BUF_REG;
|
|
|
|
dev->i2c_seq1 = mraa_i2c_init(dev->i2c_bus_number);
|
|
if (dev->i2c_seq1 == NULL){
|
|
free(dev);
|
|
return NULL;
|
|
}
|
|
|
|
dev->i2c_seq2 = mraa_i2c_init(dev->i2c_bus_number);
|
|
if (dev->i2c_seq2 == NULL){
|
|
free(dev);
|
|
return NULL;
|
|
}
|
|
|
|
if (mraa_i2c_address(dev->i2c_seq1, dev->address_seq1) != MRAA_SUCCESS)
|
|
{
|
|
mraa_i2c_stop(dev->i2c_seq1);
|
|
free(dev);
|
|
return NULL;
|
|
}
|
|
|
|
if (mraa_i2c_address(dev->i2c_seq2, dev->address_seq2) != MRAA_SUCCESS)
|
|
{
|
|
mraa_i2c_stop(dev->i2c_seq2);
|
|
free(dev);
|
|
return NULL;
|
|
}
|
|
// reset the sensor here
|
|
|
|
return dev;
|
|
}
|
|
|
|
void veml6070_close(veml6070_context dev) {
|
|
free(dev);
|
|
}
|
|
|
|
int16_t veml6070_get_uv_intensity(veml6070_context dev) {
|
|
int8_t seq_1, seq_2;
|
|
int16_t intensity;
|
|
|
|
// reading seq1
|
|
seq_1 = mraa_i2c_read_byte(dev->i2c_seq1);
|
|
if(seq_1 == -1)
|
|
return -1;
|
|
|
|
// reading seq2
|
|
seq_2 = mraa_i2c_read_byte(dev->i2c_seq2);
|
|
if (seq_2 == -1)
|
|
return -1;
|
|
|
|
intensity = (seq_1<<8)|seq_2;
|
|
|
|
return intensity;
|
|
}
|
|
|
|
upm_result_t veml6070_set_integration_time(veml6070_context dev, veml6070_integration_time_t time) {
|
|
uint8_t integrationTime = ((time<<2)|0x02);
|
|
if(mraa_i2c_write(dev->i2c_seq2, &integrationTime, 1) != MRAA_SUCCESS) {
|
|
return UPM_ERROR_UNSPECIFIED;
|
|
}
|
|
|
|
return UPM_SUCCESS;
|
|
}
|