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_temp.cpp
- Committer:
- Rhyme
- Date:
- 2018-04-03
- Revision:
- 0:d895cd1cd897
File content as of revision 0:d895cd1cd897:
#include "mbed.h" #include "LM75B.h" #include "edge_reset_mgr.h" #include "edge_sensor.h" #include "edge_temp.h" #include "edge_chart.h" float *current_temp = 0 ; edge_temp::edge_temp(LM75B *temp1, SMTC502AT *temp2, SMTC502AT *temp3, LM75B *temp4) { _temp1 = temp1 ; _temp2 = temp2 ; _temp3 = temp3 ; _temp4 = temp4 ; _ftemp[0] = _ftemp[1] = _ftemp[2] = _ftemp[3] = 0.0 ; _interval = 30 ; current_temp = &_ftemp[1] ; /* use before for current temp */ } edge_temp::~edge_temp(void) { if (_temp1) { delete _temp1 ; } if (_temp2) { delete _temp2 ; } if (_temp3) { delete _temp3 ; } if (_temp4) { delete _temp4 ; } } void edge_temp::reset(void) { } void edge_temp::prepare(void) { } int edge_temp::sample(void) { int result ; if (_temp1) { result = _temp1->getTemp(&_ftemp[0]) ; } if (_temp2) { _ftemp[1] = _temp2->getTemp() ; } if (_temp3) { _ftemp[2] = _temp3->getTemp() ; } if (_temp4) { _temp4->getTemp(&_ftemp[3]) ; } _sampled_time = edge_time ; return( result ) ; } int edge_temp::deliver(void) { int result ; char timestr[16] ; print_time() ; printf(" temp: ") ; if (_temp1) { printf("LM75B1 = %.2f ", _ftemp[0]) ; } if (_temp2) { printf("before = %.2f ", _ftemp[1]) ; } if (_temp3) { printf("after = %.2f ", _ftemp[2]) ; } if (_temp4) { printf("LM75B2 = %.2f ", _ftemp[3]) ; } printf("\n") ; time2seq(_sampled_time, timestr) ; sprintf(_str_buf, "{\"DEVICE\":\"TEMP04\",\"VAL_1\":\"%.1f\",\"VAL_2\":\"%.1f\",\"VAL_3\":\"%.1f\",\"T\":\"%s\",\"E\":\"%d\"}", _ftemp[0], _ftemp[1], _ftemp[2], timestr, _error_count) ; result = afero->setAttribute(1, _str_buf) ; return( result == afSUCCESS ) ; } int temp_v2y(float value, edge_chart_type *p) { int y ; if (value < p->min) { value = p->min ; } else if (value > p->max) { value = p->max ; } y = p->top + p->height - 1 - (int)((p->height - 2) * (value - p->min) /(p->max - p->min)) ; return( y ) ; } void edge_temp::show(void) { edge_chart_type *p = &edge_chart[ _id ] ; int x, temp, before, after ; reset_watch_dog() ; if (display) { switch(display_mode) { case DISPLAY_MODE_SUMMARY: display->BusEnable(true) ; display->set_font((unsigned char*) Arial12x12); display->set_font_zoom(2, 2) ; display->foreground(White) ; display->locate(EDGE_SUMMARY_X, EDGE_SUMMARY_TIME_Y) ; displayTime(_sampled_time) ; display->locate(EDGE_SUMMARY_X, EDGE_SUMMARY_TEMP_Y) ; display->printf("Temp : %.2f %.2f %.2f",_ftemp[0], _ftemp[1], _ftemp[2]) ; display->BusEnable(false) ; reset_watch_dog() ; break ; case DISPLAY_MODE_CHART: x = p->left + p->index + 1; temp = temp_v2y(_ftemp[0], p) ; before = temp_v2y(_ftemp[1], p) ; after = temp_v2y(_ftemp[2], p) ; display->BusEnable(true) ; if (p->index == 0) { draw_chart_frame(p) ; } display->pixel(x, temp, White) ; display->pixel(x, before, Red) ; display->pixel(x, after, Blue) ; display->BusEnable(false) ; p->index = (p->index + 1) % (p->width - 2) ; break ; } } reset_watch_dog() ; }