90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/****************************************************************************
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* apps/examples/amg88xx/amg88xx_main.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/sensors/ioctl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <float.h>
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#include <nuttx/sensors/amg88xx.h>
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#define READ_DELAY 2
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#define ROWS 8
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#define COLS 8
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* amg88xx_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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amg88xx_pixels_temp_t data;
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float temps[AMG88XX_PIXELS];
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int fd;
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int ret;
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int i;
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int j;
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fd = open("/dev/irm0", O_RDWR);
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ioctl(fd, SNIOC_SET_MOVING_AVG, true);
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while (1)
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{
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sleep(READ_DELAY);
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ret = read(fd, data, AMG88XX_PIXELS_ARRAY_LENGTH);
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printf("\n");
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if (ret == 0)
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{
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for (i = 0; i < AMG88XX_PIXELS_ARRAY_LENGTH; i += 2)
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{
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uint16_t pixel = (data[i + 1] << 8) | data[i];
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pixel &= 0x0fff;
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temps[i / 2] = pixel * AMG88XX_PIXEL_RESOLUTION;
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}
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for (i = 0; i < ROWS; i++)
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{
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for (j = 0; j < COLS; j++)
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{
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printf(" %04.2f ", temps[i * COLS + j]);
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}
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printf("\n");
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}
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}
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}
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close(fd);
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return 0;
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}
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