La Suno / Mbed 2 deprecated afero_poc15_180403

I2C hang recover function added

Dependencies:   UniGraphic mbed vt100

In this version, check_i2c_pins function was added in edge_mgr.cpp.

プログラムの起動時、I2Cモジュールを初期化する前に、I2Cに使用するピンの電位を確認し
もし一方でも Low に張り付いていた場合、SCL を GPIO 出力に設定して　
所定回数 (I2C_UNLOCK_TRIAL_CYCLE) 反転させることにより、疑似リセットクロックを生成します。

その後は、通常の起動手順に復帰し、以降はこれまでと同様の動作をします。

edge_sensor/edge_accel.h@2:de22987be9ba, 2018-06-18 (annotated)

Committer:
gaku_miyagawa
Date:
Mon Jun 18 02:55:38 2018 +0000
Revision:
2:de22987be9ba
Parent:
0:d895cd1cd897 
SBU SPECIAL

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rhyme 0:d895cd1cd897 1 #ifndef _EDGE_ACCEL_H_
Rhyme 0:d895cd1cd897 2 #define _EDGE_ACCEL_H_
Rhyme 0:d895cd1cd897 3 #include "mbed.h"
Rhyme 0:d895cd1cd897 4 #include "edge_sensor.h"
Rhyme 0:d895cd1cd897 5 #include "MMA8451Q.h"
Rhyme 0:d895cd1cd897 6
Rhyme 0:d895cd1cd897 7 /**
Rhyme 0:d895cd1cd897 8 * edge_accel edge_sensor which manage the accelerometer sensor (MMA8451Q)
Rhyme 0:d895cd1cd897 9 * @note The behavior of this class is somewhat exceptional as an edge_sensor
Rhyme 0:d895cd1cd897 10 * @note it samples and accumulates data which is the abs sum of current
Rhyme 0:d895cd1cd897 11 * @note values and previous values every 0.1 sec
Rhyme 0:d895cd1cd897 12 * @note and in each "interval" it delivers the averaged value
Rhyme 0:d895cd1cd897 13 */
Rhyme 0:d895cd1cd897 14
Rhyme 0:d895cd1cd897 15 class edge_accel : public edge_sensor {
Rhyme 0:d895cd1cd897 16 public:
Rhyme 0:d895cd1cd897 17 /**
Rhyme 0:d895cd1cd897 18 * constructor
Rhyme 0:d895cd1cd897 19 * @param the MMA8451Q object
Rhyme 0:d895cd1cd897 20 */
Rhyme 0:d895cd1cd897 21 edge_accel(MMA8451Q *accel) ;
Rhyme 0:d895cd1cd897 22
Rhyme 0:d895cd1cd897 23 /**
Rhyme 0:d895cd1cd897 24 * destructor
Rhyme 0:d895cd1cd897 25 */
Rhyme 0:d895cd1cd897 26 ~edge_accel(void) ;
Rhyme 0:d895cd1cd897 27
Rhyme 0:d895cd1cd897 28 /**
Rhyme 0:d895cd1cd897 29 * clear and reset interval values
Rhyme 0:d895cd1cd897 30 */
Rhyme 0:d895cd1cd897 31 virtual void reset(void) ;
Rhyme 0:d895cd1cd897 32 // virtual void prepare(void) ;
Rhyme 0:d895cd1cd897 33
Rhyme 0:d895cd1cd897 34 /**
Rhyme 0:d895cd1cd897 35 * sample calculate the average value
Rhyme 0:d895cd1cd897 36 * from _accumulation and _sample_count
Rhyme 0:d895cd1cd897 37 * the average value is assigned to _value
Rhyme 0:d895cd1cd897 38 * and currnt _sample_count is stored in _num_sampled
Rhyme 0:d895cd1cd897 39 * then both _accumuation and _sample_count will be cleared
Rhyme 0:d895cd1cd897 40 * @returns 0: success non-0: failure
Rhyme 0:d895cd1cd897 41 */
Rhyme 0:d895cd1cd897 42 virtual int sample(void) ;
Rhyme 0:d895cd1cd897 43
Rhyme 0:d895cd1cd897 44 /**
Rhyme 0:d895cd1cd897 45 * deliver the value to the afero cloud
Rhyme 0:d895cd1cd897 46 */
Rhyme 0:d895cd1cd897 47 virtual int deliver(void) ;
Rhyme 0:d895cd1cd897 48
Rhyme 0:d895cd1cd897 49 /**
Rhyme 0:d895cd1cd897 50 * show the data in the display (TFT)
Rhyme 0:d895cd1cd897 51 */
Rhyme 0:d895cd1cd897 52 virtual void show(void) ;
Rhyme 0:d895cd1cd897 53
Rhyme 0:d895cd1cd897 54 /**
Rhyme 0:d895cd1cd897 55 * accum this is the real sampling
Rhyme 0:d895cd1cd897 56 * and the differences of sampled values
Rhyme 0:d895cd1cd897 57 * and previous values are calcurated and accumulated
Rhyme 0:d895cd1cd897 58 * @returns 0: success non-0: failure
Rhyme 0:d895cd1cd897 59 */
Rhyme 0:d895cd1cd897 60 int accum(void) ;
Rhyme 0:d895cd1cd897 61
Rhyme 0:d895cd1cd897 62 /**
Rhyme 0:d895cd1cd897 63 * Clear internal values
Rhyme 0:d895cd1cd897 64 */
Rhyme 0:d895cd1cd897 65 void clear_value(void) ;
Rhyme 0:d895cd1cd897 66
Rhyme 0:d895cd1cd897 67 private:
Rhyme 0:d895cd1cd897 68 MMA8451Q *_accel ;
Rhyme 0:d895cd1cd897 69 float _value ;
Rhyme 0:d895cd1cd897 70 int32_t _num_sampled ;
Rhyme 0:d895cd1cd897 71 int32_t _sample_count ;
Rhyme 0:d895cd1cd897 72 int32_t _accumulation ;
Rhyme 0:d895cd1cd897 73 int16_t _prev_x ;
Rhyme 0:d895cd1cd897 74 int16_t _prev_y ;
Rhyme 0:d895cd1cd897 75 int16_t _prev_z ;
Rhyme 0:d895cd1cd897 76 } ;
Rhyme 0:d895cd1cd897 77
Rhyme 0:d895cd1cd897 78 #endif /* _EDGE_ACCEL_H_ */