Mercurial > public > ostc4
annotate Small_CPU/Inc/compass.h @ 328:4fe5400567e7 I2C_Improvment
Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery
The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around.
Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used
I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
| author | ideenmodellierer |
|---|---|
| date | Wed, 17 Jul 2019 22:42:15 +0200 |
| parents | 5f11787b4f42 |
| children |
| rev | line source |
|---|---|
| 38 | 1 /* Define to prevent recursive inclusion -------------------------------------*/ |
| 2 #ifndef COMPASS_H | |
| 3 #define COMPASS_H | |
| 4 | |
| 5 #include <stdint.h> | |
| 6 | |
| 7 void compass_init(uint8_t fast, uint8_t gain); | |
| 8 void accelerator_init(void); | |
| 9 void compass_read(void); | |
| 10 void acceleration_read(void); | |
| 11 int compass_calib(void); | |
| 12 void compass_calc(void); | |
| 13 //void compass_calc_mini_during_calibration(void); | |
| 14 | |
| 15 float check_compass_calib(void); | |
| 16 | |
| 17 void compass_sleep(void); | |
| 18 void accelerator_sleep(void); | |
| 19 | |
| 20 #endif /* COMPASS_H */ |