68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <math.h>
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#include "lis3dh.h"
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#include "interrupt.h"
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#include "i2c.h"
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/* GPIO 12 or Pin 32 */
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#define GPIO_INTERRUPT_PIN 12
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int main() {
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lis3dh_t lis;
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struct lis3dh_fifo_data fifo;
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int k;
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lis.dev.init = i2c_init;
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lis.dev.read = i2c_read;
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lis.dev.write = i2c_write;
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lis.dev.sleep = usleep;
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lis.dev.deinit = i2c_deinit;
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if (lis3dh_init(&lis)) {
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/* error handling */
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}
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/* register interrupt */
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if (int_register(GPIO_INTERRUPT_PIN)) {
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/* error handling */
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}
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lis.cfg.mode = LIS3DH_MODE_NORMAL;
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lis.cfg.range = LIS3DH_FS_2G;
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lis.cfg.rate = LIS3DH_ODR_100_HZ;
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lis.cfg.fifo.mode = LIS3DH_FIFO_MODE_STREAM;
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lis.cfg.fifo.trig = LIS3DH_FIFO_TRIG_INT1; /* trigger into INT1 */
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lis.cfg.int1.wtm = 1; /* trigger upon watermark level reached */
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if (lis3dh_configure(&lis)) {
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/* error handling */
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}
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/* wait for interrupt from LIS3DH */
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if (int_poll(GPIO_INTERRUPT_PIN)) {
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/* error handling */
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}
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if (lis3dh_read_fifo(&lis, &fifo)) {
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/* error handling */
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}
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for(k=0; k<fifo.size; k++) {
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printf("%04.04f %04.04f %04.04f %04.04f\n", fifo.x[k], fifo.y[k], fifo.z[k]);
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}
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/* unregister interrupt */
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if (int_unregister(GPIO_INTERRUPT_PIN)) {
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/* error handling */
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}
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if (lis3dh_deinit(&lis)) {
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/* error handling */
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}
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return 0;
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}
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