summaryrefslogtreecommitdiffstats
path: root/libsensors/akmdfs/AKFS_Measure.c
diff options
context:
space:
mode:
Diffstat (limited to 'libsensors/akmdfs/AKFS_Measure.c')
-rw-r--r--libsensors/akmdfs/AKFS_Measure.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/libsensors/akmdfs/AKFS_Measure.c b/libsensors/akmdfs/AKFS_Measure.c
new file mode 100644
index 0000000..84c0843
--- /dev/null
+++ b/libsensors/akmdfs/AKFS_Measure.c
@@ -0,0 +1,410 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2012 Asahi Kasei Microdevices Corporation, Japan
+ *
+ * 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.
+ *
+ ******************************************************************************/
+#ifdef WIN32
+#include "AK8975_LinuxDriver.h"
+#else
+#include "AK8975Driver.h"
+#endif
+
+#include "AKFS_Measure.h"
+#include "AKFS_Disp.h"
+#include "AKFS_APIs.h"
+
+/*!
+ Read sensitivity adjustment data from fuse ROM.
+ @return If data are read successfully, the return value is #AKM_SUCCESS.
+ Otherwise the return value is #AKM_FAIL.
+ @param[out] regs The read ASA values. When this function succeeds, ASAX value
+ is saved in regs[0], ASAY is saved in regs[1], ASAZ is saved in regs[2].
+ */
+int16 AKFS_ReadAK8975FUSEROM(
+ uint8 regs[3]
+)
+{
+ /* Set to FUSE ROM access mode */
+ if (AKD_SetMode(AK8975_MODE_FUSE_ACCESS) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Read values. ASAX, ASAY, ASAZ */
+ if (AKD_RxData(AK8975_FUSE_ASAX, regs, 3) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Set to PowerDown mode */
+ if (AKD_SetMode(AK8975_MODE_POWERDOWN) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ AKMDEBUG(DBG_LEVEL2, "%s: asa(dec)=%d,%d,%d\n",
+ __FUNCTION__, regs[0], regs[1], regs[2]);
+
+ return AKM_SUCCESS;
+}
+
+/*!
+ Carry out self-test.
+ @return If this function succeeds, the return value is #AKM_SUCCESS.
+ Otherwise the return value is #AKM_FAIL.
+ */
+int16 AKFS_SelfTest(void)
+{
+ BYTE i2cData[SENSOR_DATA_SIZE];
+ BYTE asa[3];
+ AKFLOAT hdata[3];
+ int16 ret;
+
+ /* Set to FUSE ROM access mode */
+ if (AKD_SetMode(AK8975_MODE_FUSE_ACCESS) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Read values from ASAX to ASAZ */
+ if (AKD_RxData(AK8975_FUSE_ASAX, asa, 3) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Set to PowerDown mode */
+ if (AKD_SetMode(AK8975_MODE_POWERDOWN) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Set to self-test mode */
+ i2cData[0] = 0x40;
+ if (AKD_TxData(AK8975_REG_ASTC, i2cData, 1) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /* Set to Self-test mode */
+ if (AKD_SetMode(AK8975_MODE_SELF_TEST) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ /*
+ Wait for DRDY pin changes to HIGH.
+ Get measurement data from AK8975
+ */
+ if (AKD_GetMagneticData(i2cData) != AKD_SUCCESS) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+
+ hdata[0] = AK8975_HDATA_CONVERTER(i2cData[2], i2cData[1], asa[0]);
+ hdata[1] = AK8975_HDATA_CONVERTER(i2cData[4], i2cData[3], asa[1]);
+ hdata[2] = AK8975_HDATA_CONVERTER(i2cData[6], i2cData[5], asa[2]);
+
+ /* Test */
+ ret = 1;
+ if ((hdata[0] < AK8975_SELFTEST_MIN_X) ||
+ (AK8975_SELFTEST_MAX_X < hdata[0])) {
+ ret = 0;
+ }
+ if ((hdata[1] < AK8975_SELFTEST_MIN_Y) ||
+ (AK8975_SELFTEST_MAX_Y < hdata[1])) {
+ ret = 0;
+ }
+ if ((hdata[2] < AK8975_SELFTEST_MIN_Z) ||
+ (AK8975_SELFTEST_MAX_Z < hdata[2])) {
+ ret = 0;
+ }
+
+ AKMDEBUG(DBG_LEVEL2, "Test(%s):%8.2f, %8.2f, %8.2f\n",
+ (ret ? "Success" : "fail"), hdata[0], hdata[1], hdata[2]);
+
+ if (ret) {
+ return AKM_SUCCESS;
+ } else {
+ return AKM_FAIL;
+ }
+}
+
+/*!
+ This function calculate the duration of sleep for maintaining
+ the loop keep the period.
+ This function calculates "minimum - (end - start)".
+ @return The result of above equation in nanosecond.
+ @param end The time of after execution.
+ @param start The time of before execution.
+ @param minimum Loop period of each execution.
+ */
+struct timespec AKFS_CalcSleep(
+ const struct timespec* end,
+ const struct timespec* start,
+ const int64_t minimum
+)
+{
+ int64_t endL;
+ int64_t startL;
+ int64_t diff;
+
+ struct timespec ret;
+
+ endL = (end->tv_sec * 1000000000) + end->tv_nsec;
+ startL = (start->tv_sec * 1000000000) + start->tv_nsec;
+ diff = minimum;
+
+ diff -= (endL - startL);
+
+ /* Don't allow negative value */
+ if (diff < 0) {
+ diff = 0;
+ }
+
+ /* Convert to timespec */
+ if (diff > 1000000000) {
+ ret.tv_sec = diff / 1000000000;
+ ret.tv_nsec = diff % 1000000000;
+ } else {
+ ret.tv_sec = 0;
+ ret.tv_nsec = diff;
+ }
+ return ret;
+}
+
+/*!
+ Get interval of each sensors from device driver.
+ @return If this function succeeds, the return value is #AKM_SUCCESS.
+ Otherwise the return value is #AKM_FAIL.
+ @param flag This variable indicates what sensor frequency is updated.
+ @param minimum This value show the minimum loop period in all sensors.
+ */
+int16 AKFS_GetInterval(
+ uint16* flag,
+ int64_t* minimum
+)
+{
+ /* Accelerometer, Magnetometer, Orientation */
+ /* Delay is in nano second unit. */
+ /* Negative value means the sensor is disabled.*/
+ int64_t delay[AKM_NUM_SENSORS];
+ int i;
+
+ if (AKD_GetDelay(delay) < 0) {
+ AKMERROR;
+ return AKM_FAIL;
+ }
+ AKMDATA(AKMDATA_GETINTERVAL,"delay[A,M,O]=%lld,%lld,%lld\n",
+ delay[0], delay[1], delay[2]);
+
+ /* update */
+ *minimum = 1000000000;
+ *flag = 0;
+ for (i=0; i<AKM_NUM_SENSORS; i++) {
+ /* Set flag */
+ if (delay[i] >= 0) {
+ *flag |= 1 << i;
+ if (*minimum > delay[i]) {
+ *minimum = delay[i];
+ }
+ }
+ }
+ return AKM_SUCCESS;
+}
+
+/*!
+ If this program run as console mode, measurement result will be displayed
+ on console terminal.
+ @return If this function succeeds, the return value is #AKM_SUCCESS.
+ Otherwise the return value is #AKM_FAIL.
+ */
+void AKFS_OutputResult(
+ const uint16 flag,
+ const AKSENSOR_DATA* acc,
+ const AKSENSOR_DATA* mag,
+ const AKSENSOR_DATA* ori
+)
+{
+ int buf[YPR_DATA_SIZE];
+
+ /* Store to buffer */
+ buf[0] = flag; /* Data flag */
+ buf[1] = CONVERT_ACC(acc->x); /* Ax */
+ buf[2] = CONVERT_ACC(acc->y); /* Ay */
+ buf[3] = CONVERT_ACC(acc->z); /* Az */
+ buf[4] = acc->status; /* Acc status */
+ buf[5] = CONVERT_MAG(mag->x); /* Mx */
+ buf[6] = CONVERT_MAG(mag->y); /* My */
+ buf[7] = CONVERT_MAG(mag->z); /* Mz */
+ buf[8] = mag->status; /* Mag status */
+ buf[9] = CONVERT_ORI(ori->x); /* yaw */
+ buf[10] = CONVERT_ORI(ori->y); /* pitch */
+ buf[11] = CONVERT_ORI(ori->z); /* roll */
+
+ if (g_opmode & OPMODE_CONSOLE) {
+ /* Console mode */
+ Disp_Result(buf);
+ }
+
+ /* Set result to driver */
+ AKD_SetYPR(buf);
+}
+
+/*!
+ This is the main routine of measurement.
+ */
+void AKFS_MeasureLoop(void)
+{
+ BYTE i2cData[SENSOR_DATA_SIZE]; /* ST1 ~ ST2 */
+ int16 mag[3];
+ int16 mstat;
+ int16 acc[3];
+ struct timespec tsstart= {0, 0};
+ struct timespec tsend = {0, 0};
+ struct timespec doze;
+ int64_t minimum;
+ uint16 flag;
+ AKSENSOR_DATA sv_acc;
+ AKSENSOR_DATA sv_mag;
+ AKSENSOR_DATA sv_ori;
+ AKFLOAT tmpx, tmpy, tmpz;
+ int16 tmp_accuracy;
+
+ minimum = -1;
+
+#ifdef WIN32
+ clock_init_time();
+#endif
+
+ /* Initialize library functions and device */
+ if (AKFS_Start(CSPEC_SETTING_FILE) != AKM_SUCCESS) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ while (g_stopRequest != AKM_TRUE) {
+ /* Beginning time */
+ if (clock_gettime(CLOCK_MONOTONIC, &tsstart) < 0) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ /* Get interval */
+ if (AKFS_GetInterval(&flag, &minimum) != AKM_SUCCESS) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ if ((flag & ACC_DATA_READY) || (flag & ORI_DATA_READY)) {
+ /* Get accelerometer */
+ if (AKD_GetAccelerationData(acc) != AKD_SUCCESS) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ /* Calculate accelerometer vector */
+ if (AKFS_Get_ACCELEROMETER(acc, 0, &tmpx, &tmpy, &tmpz, &tmp_accuracy) == AKM_SUCCESS) {
+ sv_acc.x = tmpx;
+ sv_acc.y = tmpy;
+ sv_acc.z = tmpz;
+ sv_acc.status = tmp_accuracy;
+ } else {
+ flag &= ~ACC_DATA_READY;
+ flag &= ~ORI_DATA_READY;
+ }
+ }
+
+ if ((flag & MAG_DATA_READY) || (flag & ORI_DATA_READY)) {
+ /* Set to measurement mode */
+ if (AKD_SetMode(AK8975_MODE_SNG_MEASURE) != AKD_SUCCESS) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ /* Wait for DRDY and get data from device */
+ if (AKD_GetMagneticData(i2cData) != AKD_SUCCESS) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+ /* raw data to x,y,z value */
+ mag[0] = (int)((int16_t)(i2cData[2]<<8)+((int16_t)i2cData[1]));
+ mag[1] = (int)((int16_t)(i2cData[4]<<8)+((int16_t)i2cData[3]));
+ mag[2] = (int)((int16_t)(i2cData[6]<<8)+((int16_t)i2cData[5]));
+ mstat = i2cData[0] | i2cData[7];
+
+ AKMDATA(AKMDATA_BDATA,
+ "bData=%02X,%02X,%02X,%02X,%02X,%02X,%02X,%02X\n",
+ i2cData[0], i2cData[1], i2cData[2], i2cData[3],
+ i2cData[4], i2cData[5], i2cData[6], i2cData[7]);
+
+ /* Calculate magnetic field vector */
+ if (AKFS_Get_MAGNETIC_FIELD(mag, mstat, &tmpx, &tmpy, &tmpz, &tmp_accuracy) == AKM_SUCCESS) {
+ sv_mag.x = tmpx;
+ sv_mag.y = tmpy;
+ sv_mag.z = tmpz;
+ sv_mag.status = tmp_accuracy;
+ } else {
+ flag &= ~MAG_DATA_READY;
+ flag &= ~ORI_DATA_READY;
+ }
+ }
+
+ if (flag & ORI_DATA_READY) {
+ if (AKFS_Get_ORIENTATION(&tmpx, &tmpy, &tmpz, &tmp_accuracy) == AKM_SUCCESS) {
+ sv_ori.x = tmpx;
+ sv_ori.y = tmpy;
+ sv_ori.z = tmpz;
+ sv_ori.status = tmp_accuracy;
+ } else {
+ flag &= ~ORI_DATA_READY;
+ }
+ }
+
+ /* Output result */
+ AKFS_OutputResult(flag, &sv_acc, &sv_mag, &sv_ori);
+
+ /* Ending time */
+ if (clock_gettime(CLOCK_MONOTONIC, &tsend) < 0) {
+ AKMERROR;
+ goto MEASURE_END;
+ }
+
+ /* Calculate duration */
+ doze = AKFS_CalcSleep(&tsend, &tsstart, minimum);
+ AKMDATA(AKMDATA_LOOP, "Sleep: %6.2f msec\n", (doze.tv_nsec/1000000.0f));
+ nanosleep(&doze, NULL);
+
+#ifdef WIN32
+ if (_kbhit()) {
+ _getch();
+ break;
+ }
+#endif
+ }
+
+MEASURE_END:
+ /* Set to PowerDown mode */
+ if (AKD_SetMode(AK8975_MODE_POWERDOWN) != AKD_SUCCESS) {
+ AKMERROR;
+ return;
+ }
+
+ /* Save parameters */
+ if (AKFS_Stop(CSPEC_SETTING_FILE) != AKM_SUCCESS) {
+ AKMERROR;
+ }
+}
+
+
generated by cgit v1.1 at 2024-12-22 09:07:58 +0000