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/*
* Copyright (c) 2019 SINO TECH Co., Ltd.
*
* 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 <peripheral_io.h>
#include "log.h"
#include "resource_internal.h"
#define UART_BUS 0 /* RPI3 - Tizen */
#define GPIO_UART 14
#define INPUT_SIZE 3
#define OUTPUT_SIZE 9
static peripheral_uart_h g_uart_h = NULL;
void resource_close_mcu90615(int pin_num)
{
_I("MCU90615 is finishing...[%d]", pin_num);
resource_get_info(GPIO_UART)->opened = 0;
if (!g_uart_h) return;
peripheral_uart_close(g_uart_h);
g_uart_h = NULL;
}
int resource_read_mcu90615(double *target_object, double *target_ambient)
{
int ret = PERIPHERAL_ERROR_NONE;
uint8_t data[INPUT_SIZE] = {0xA5, 0x45, 0xEA};
uint8_t rdata[OUTPUT_SIZE] = {0, };
if (!g_uart_h) {
ret = peripheral_uart_open(UART_BUS, &g_uart_h);
retv_if(ret != PERIPHERAL_ERROR_NONE, -1);
resource_get_info(GPIO_UART)->opened = 1;
resource_get_info(GPIO_UART)->close = resource_close_mcu90615;
ret = peripheral_uart_set_baud_rate(g_uart_h, PERIPHERAL_UART_BAUD_RATE_115200);
goto_if(ret != PERIPHERAL_ERROR_NONE, error);
ret = peripheral_uart_set_byte_size(g_uart_h, PERIPHERAL_UART_BYTE_SIZE_8BIT);
goto_if(ret != PERIPHERAL_ERROR_NONE, error);
ret = peripheral_uart_set_parity(g_uart_h, PERIPHERAL_UART_PARITY_NONE);
goto_if(ret != PERIPHERAL_ERROR_NONE, error);
ret = peripheral_uart_set_stop_bits(g_uart_h, PERIPHERAL_UART_STOP_BITS_1BIT);
goto_if(ret != PERIPHERAL_ERROR_NONE, error);
ret = peripheral_uart_set_flow_control(g_uart_h, PERIPHERAL_UART_SOFTWARE_FLOW_CONTROL_NONE, PERIPHERAL_UART_HARDWARE_FLOW_CONTROL_NONE);
goto_if(ret != PERIPHERAL_ERROR_NONE, error);
ret = peripheral_uart_write(g_uart_h, data, INPUT_SIZE);
goto_if(ret < 0, error); /* the number of bytes write on success, otherwise a negative error value */
}
ret = peripheral_uart_read(g_uart_h, rdata, OUTPUT_SIZE);
goto_if(ret < 0, error); /* the number of bytes write on success, otherwise a negative error value */
#ifdef DEBUG
_D("Read : %d", ret);
#endif
#ifdef DEBUG
for (int i = 0; i < OUTPUT_SIZE; i++) {
_D("0x%X", rdata[i]);
}
#endif
*target_object = (double) (rdata[4] << 8 | rdata[5]) / 100.0f;
*target_ambient = (double) (rdata[6] << 8 | rdata[7]) / 100.0f;
#ifdef DEBUG
if (*target_object != 0.0f)
_D("Target Object : %f, Target Ambient : %f", target_object, target_ambient);
#endif
return 0;
error:
resource_close_mcu90615(GPIO_UART);
return -1;
}
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