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.cpp@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 #include "mbed.h"
Rhyme 0:d895cd1cd897 2 #include "afLib.h"
Rhyme 0:d895cd1cd897 3 #include "edge_reset_mgr.h"
Rhyme 0:d895cd1cd897 4 #include "edge_sensor.h"
Rhyme 0:d895cd1cd897 5 #include "edge_accel.h"
Rhyme 0:d895cd1cd897 6 #include "MMA8451Q.h"
Rhyme 0:d895cd1cd897 7
Rhyme 0:d895cd1cd897 8 edge_accel::edge_accel(MMA8451Q *accel) : edge_sensor()
Rhyme 0:d895cd1cd897 9 {
Rhyme 0:d895cd1cd897 10 _accel = accel ;
Rhyme 0:d895cd1cd897 11 _sample_count = 0 ;
Rhyme 0:d895cd1cd897 12 _accumulation = 0 ;
Rhyme 0:d895cd1cd897 13 _prev_x = 0 ;
Rhyme 0:d895cd1cd897 14 _prev_y = 0 ;
Rhyme 0:d895cd1cd897 15 _prev_z = 0 ;
Rhyme 0:d895cd1cd897 16
Rhyme 0:d895cd1cd897 17 _interval = 30 ;
Rhyme 0:d895cd1cd897 18 }
Rhyme 0:d895cd1cd897 19
Rhyme 0:d895cd1cd897 20 edge_accel::~edge_accel(void)
Rhyme 0:d895cd1cd897 21 {
Rhyme 0:d895cd1cd897 22 delete _accel ;
Rhyme 0:d895cd1cd897 23 }
Rhyme 0:d895cd1cd897 24
Rhyme 0:d895cd1cd897 25 void edge_accel::reset(void)
Rhyme 0:d895cd1cd897 26 {
Rhyme 0:d895cd1cd897 27 clear_value() ;
Rhyme 0:d895cd1cd897 28 edge_sensor::reset() ;
Rhyme 0:d895cd1cd897 29 }
Rhyme 0:d895cd1cd897 30
Rhyme 0:d895cd1cd897 31 #if 0
Rhyme 0:d895cd1cd897 32 void edge_accel::prepare(void)
Rhyme 0:d895cd1cd897 33 {
Rhyme 0:d895cd1cd897 34 // printf("accel prepare\n") ;
Rhyme 0:d895cd1cd897 35 }
Rhyme 0:d895cd1cd897 36 #endif
Rhyme 0:d895cd1cd897 37
Rhyme 0:d895cd1cd897 38 int edge_accel::sample(void)
Rhyme 0:d895cd1cd897 39 {
Rhyme 0:d895cd1cd897 40 int result ;
Rhyme 0:d895cd1cd897 41 float theValue = 0.0 ;
Rhyme 0:d895cd1cd897 42 if (_sample_count > 1) { /* if sample is 1 or less, no data */
Rhyme 0:d895cd1cd897 43 _num_sampled = _sample_count - 1 ;
Rhyme 0:d895cd1cd897 44 theValue = (float)_accumulation / (float)(_num_sampled) ;
Rhyme 0:d895cd1cd897 45 result = 0 ; /* success */
Rhyme 0:d895cd1cd897 46 } else {
Rhyme 0:d895cd1cd897 47 result = 1 ; /* fail! */
Rhyme 0:d895cd1cd897 48 }
Rhyme 0:d895cd1cd897 49 _value = theValue / 4096.0 ;
Rhyme 0:d895cd1cd897 50 _sampled_time = edge_time ;
Rhyme 0:d895cd1cd897 51 _sample_count = 0 ;
Rhyme 0:d895cd1cd897 52 _accumulation = 0 ;
Rhyme 0:d895cd1cd897 53 return( result ) ;
Rhyme 0:d895cd1cd897 54 }
Rhyme 0:d895cd1cd897 55
Rhyme 0:d895cd1cd897 56 int edge_accel::deliver(void)
Rhyme 0:d895cd1cd897 57 {
Rhyme 0:d895cd1cd897 58 int result ;
Rhyme 0:d895cd1cd897 59 char timestr[16] ;
Rhyme 0:d895cd1cd897 60
Rhyme 0:d895cd1cd897 61 print_time(_sampled_time) ;
Rhyme 0:d895cd1cd897 62 // _value = get_value() ;
Rhyme 0:d895cd1cd897 63 printf(" accel: %.3f [%d samples]\n", _value, _num_sampled) ;
Rhyme 0:d895cd1cd897 64 time2seq(_sampled_time, timestr) ;
Rhyme 0:d895cd1cd897 65 sprintf(_str_buf,
Rhyme 0:d895cd1cd897 66 "{\"DEVICE\":\"ACCEL\",\"PN\":\"MMA8451Q\",\"VAL_X\":\"%.3f\",\"VAL_Y\":\"0\",\"VAL_Z\":\"0\",\"UNIT\":\"g\",\"T\":\"%s\",\"E\":\"%d\"}",
Rhyme 0:d895cd1cd897 67 _value, timestr, _error_count) ;
Rhyme 0:d895cd1cd897 68 result = afero->setAttribute(1, _str_buf) ;
Rhyme 0:d895cd1cd897 69
Rhyme 0:d895cd1cd897 70 return( result == afSUCCESS ) ;
Rhyme 0:d895cd1cd897 71 }
Rhyme 0:d895cd1cd897 72
Rhyme 0:d895cd1cd897 73 int accel_v2y(float value, edge_chart_type *p)
Rhyme 0:d895cd1cd897 74 {
Rhyme 0:d895cd1cd897 75 int y ;
Rhyme 0:d895cd1cd897 76 if (value < p->min) {
Rhyme 0:d895cd1cd897 77 value = p->min ;
Rhyme 0:d895cd1cd897 78 } else if (value > p->max) {
Rhyme 0:d895cd1cd897 79 value = p->max ;
Rhyme 0:d895cd1cd897 80 }
Rhyme 0:d895cd1cd897 81 y = p->top + p->height/2 - 1
Rhyme 0:d895cd1cd897 82 - (int)((p->height - 2) * value /(p->max - p->min)) ;
Rhyme 0:d895cd1cd897 83 return( y ) ;
Rhyme 0:d895cd1cd897 84 }
Rhyme 0:d895cd1cd897 85
Rhyme 0:d895cd1cd897 86 void edge_accel::show(void)
Rhyme 0:d895cd1cd897 87 {
Rhyme 0:d895cd1cd897 88 int x, y ;
Rhyme 0:d895cd1cd897 89 edge_chart_type *p = &edge_chart[0] ; /* edge_chart for accel */
Rhyme 0:d895cd1cd897 90 reset_watch_dog() ;
Rhyme 0:d895cd1cd897 91 if (display) {
Rhyme 0:d895cd1cd897 92 switch(display_mode) {
Rhyme 0:d895cd1cd897 93 case DISPLAY_MODE_SUMMARY:
Rhyme 0:d895cd1cd897 94 display->BusEnable(true) ;
Rhyme 0:d895cd1cd897 95 display->set_font((unsigned char*) Arial12x12);
Rhyme 0:d895cd1cd897 96 display->set_font_zoom(2, 2) ;
Rhyme 0:d895cd1cd897 97 display->foreground(White) ;
Rhyme 0:d895cd1cd897 98 display->locate(EDGE_SUMMARY_X, EDGE_SUMMARY_TIME_Y) ;
Rhyme 0:d895cd1cd897 99 displayTime(_sampled_time) ;
Rhyme 0:d895cd1cd897 100 // display->locate(10, 5) ;
Rhyme 0:d895cd1cd897 101 // display->printf(timestr) ;
Rhyme 0:d895cd1cd897 102 display->locate(EDGE_SUMMARY_X, EDGE_SUMMARY_ACCEL_Y) ;
Rhyme 0:d895cd1cd897 103 display->printf("Accel: %.3f [%4d]", _value, _num_sampled) ;
Rhyme 0:d895cd1cd897 104 display->BusEnable(false) ;
Rhyme 0:d895cd1cd897 105 reset_watch_dog() ;
Rhyme 0:d895cd1cd897 106 break ;
Rhyme 0:d895cd1cd897 107 case DISPLAY_MODE_CHART:
Rhyme 0:d895cd1cd897 108 x = p->left + p->index + 1;
Rhyme 0:d895cd1cd897 109 y = accel_v2y(_value, p) ;
Rhyme 0:d895cd1cd897 110 display->BusEnable(true) ;
Rhyme 0:d895cd1cd897 111 if (p->index == 0) {
Rhyme 0:d895cd1cd897 112 draw_chart_frame(p) ;
Rhyme 0:d895cd1cd897 113 }
Rhyme 0:d895cd1cd897 114 display->pixel(x, y, White) ;
Rhyme 0:d895cd1cd897 115 display->BusEnable(false) ;
Rhyme 0:d895cd1cd897 116 p->index = (p->index + 1) % (p->width - 2) ;
Rhyme 0:d895cd1cd897 117 break ;
Rhyme 0:d895cd1cd897 118 default:
Rhyme 0:d895cd1cd897 119 break ;
Rhyme 0:d895cd1cd897 120 }
Rhyme 0:d895cd1cd897 121 }
Rhyme 0:d895cd1cd897 122 clear_value() ;
Rhyme 0:d895cd1cd897 123 reset_watch_dog() ;
Rhyme 0:d895cd1cd897 124 }
Rhyme 0:d895cd1cd897 125
Rhyme 0:d895cd1cd897 126 int edge_accel::accum(void)
Rhyme 0:d895cd1cd897 127 {
Rhyme 0:d895cd1cd897 128 int result ;
Rhyme 0:d895cd1cd897 129 int16_t value[3] ;
Rhyme 0:d895cd1cd897 130
Rhyme 0:d895cd1cd897 131 if (_enable) {
Rhyme 0:d895cd1cd897 132 result = _accel->getAllRawData(value) ;
Rhyme 0:d895cd1cd897 133
Rhyme 0:d895cd1cd897 134 if (result == 0) { /* success */
Rhyme 0:d895cd1cd897 135 if (_sample_count != 0) { /* first data does not have prev_data */
Rhyme 0:d895cd1cd897 136 _accumulation +=
Rhyme 0:d895cd1cd897 137 abs(_prev_x - value[0])
Rhyme 0:d895cd1cd897 138 + abs(_prev_y - value[1])
Rhyme 0:d895cd1cd897 139 + abs(_prev_z - value[2]) ;
Rhyme 0:d895cd1cd897 140 }
Rhyme 0:d895cd1cd897 141
Rhyme 0:d895cd1cd897 142 _sample_count++ ;
Rhyme 0:d895cd1cd897 143
Rhyme 0:d895cd1cd897 144 _prev_x = value[0] ;
Rhyme 0:d895cd1cd897 145 _prev_y = value[1] ;
Rhyme 0:d895cd1cd897 146 _prev_z = value[2] ;
Rhyme 0:d895cd1cd897 147 }
Rhyme 0:d895cd1cd897 148 }
Rhyme 0:d895cd1cd897 149
Rhyme 0:d895cd1cd897 150 return( result ) ;
Rhyme 0:d895cd1cd897 151 }
Rhyme 0:d895cd1cd897 152
Rhyme 0:d895cd1cd897 153 void edge_accel::clear_value(void)
Rhyme 0:d895cd1cd897 154 {
Rhyme 0:d895cd1cd897 155 _sample_count = 0 ;
Rhyme 0:d895cd1cd897 156 _accumulation = 0 ;
Rhyme 0:d895cd1cd897 157 _prev_x = 0 ;
Rhyme 0:d895cd1cd897 158 _prev_y = 0 ;
Rhyme 0:d895cd1cd897 159 _prev_z = 0 ;
Rhyme 0:d895cd1cd897 160 }
Rhyme 0:d895cd1cd897 161
Rhyme 0:d895cd1cd897 162
Rhyme 0:d895cd1cd897 163