Darrel Weng
/
MMA8451Q
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Fork of
MMA8451Q
by 
Antonio Quevedo
Revision 1:9c229882cd2b, committed 2017-07-18
- Comitter:
- DWeng
- Date:
- Tue Jul 18 18:34:24 2017 +0000
- Parent:
- 0:7c9ab58f6af3
- Commit message:
- initial commit.
Changed in this revision
| MMA8451Q.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/MMA8451Q.cpp Wed Jun 04 19:16:47 2014 +0000
+++ b/MMA8451Q.cpp Tue Jul 18 18:34:24 2017 +0000
@@ -36,9 +36,10 @@
uint8_t data[2] = {REG_CTRL_REG1, 0x00}; // Puts acc in standby for configuring
writeRegs(data, 2);
data[0] = REG_XYZ_DATA_CFG; // Writing 00 turns off high-pass filter and sets full scale range to 2g
- // data[1] = 0x01; for 4g
- // data[1] = 0x02; for 8g
- writeRegs(data, 2);
+ // data[1] = 0x01; for 4g
+ // data[1] = 0x02; for 8g
+ data[1] = 0x00;
+ writeRegs(data, 2);
data[0] = REG_CTRL_REG2;
data[1] = 0x00; // Disable self-test, software reset and auto-sleep; operates in normal mode
writeRegs(data, 2);
@@ -50,7 +51,7 @@
data[0] = REG_CTRL_REG5;
writeRegs(data, 2); // Routes Data Ready interrupt to INT1
data[0] = REG_CTRL_REG1;
- data[1] = 0x09; // Data rate is 800Hz
+ data[1] = 0x09; // Data rate is 400Hz
writeRegs(data, 2);
}
@@ -59,9 +60,9 @@
void MMA8451Q::getAccAllAxis(int16_t * res) {
uint8_t temp[6];
readRegs(REG_OUT_X_MSB, temp, 6);
- res[0] = (temp[0] * 256) + temp[1];
- res[1] = (temp[2] * 256) + temp[3];
- res[2] = (temp[4] * 256) + temp[5];
+ res[0] = ((temp[0] << 8) + temp[1]);
+ res[1] = ((temp[2] << 8) + temp[3]);
+ res[2] = ((temp[4] << 8) + temp[5]);
}
void MMA8451Q::readRegs(int addr, uint8_t * data, int len) {