Motoo Tanaka
A simple meter using Adafruit 2.8 TFT with touch v2
Dependencies: SPI_STMPE610 UniGraphic mbed vt100
A dumb simple voltage tester using ADC.
With FRDM-KL25Z, you can measure about 0V to 3.28V.
Nothing to drop your jaw nor holding your breath
but I wanted one, so I wrote one ;-)
とても単純はADCを使用した電圧テスターです。
FRDM-KL25Z を使用した場合、0V ～ 3.28V くらいが測定範囲です。
特に目新しいことも、驚くこともありませんが、
自分が欲しいので書いてみました (^ - ^)
On 18-May-2018
I changed the number display from 0.00 to 0.000
so that I can measure the change of a small loadcell.
2018年5月18日
ロードセル (重量センサ)の出力値の変化を見たかったので
有効数字を小数点以下2桁から3桁に変更しました。
Revision 0:d01def9cf41e, committed 2017-07-20
- Comitter:
- Rhyme
- Date:
- Thu Jul 20 02:37:13 2017 +0000
- Child:
- 1:d7f2aa328962
- Commit message:
- first working version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SPI_STMPE610.lib Thu Jul 20 02:37:13 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/Rhyme/code/SPI_STMPE610/#6740dfc84a8c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/UniGraphic.lib Thu Jul 20 02:37:13 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/teams/GraphicsDisplay/code/UniGraphic/#f87f06292637
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jul 20 02:37:13 2017 +0000
@@ -0,0 +1,72 @@
+#include "mbed.h"
+#include "ILI9341.h"
+#include "Arial12x12.h"
+#include "Arial24x23.h"
+#include "Arial28x28.h"
+#include "Arial43x48_numb.h"
+#include "SPI_STMPE610.h"
+#include "vt100.h"
+#include "meter.h"
+#include "main.h"
+
+vt100 *tty = 0 ;
+ILI9341 *tft = 0 ;
+SPI_STMPE610 *tsc = 0 ;
+meter *tacho = 0 ;
+
+DigitalOut myled(LED1, 1);
+DigitalOut *backlight = 0 ;
+AnalogIn *vin = 0 ;
+
+float min_value = 0.0 ;
+float max_value = 3.3 ;
+
+void initTFT(void)
+{
+ //Configure the display driver
+ tft->BusEnable(true) ;
+ tft->FastWindow(true) ;
+ tft->background(Black);
+ tft->foreground(White);
+ wait(0.01) ;
+ tft->cls();
+ tft->BusEnable(false) ;
+ backlight = new DigitalOut(PIN_BL_TFT, 1) ;
+}
+
+void init_hardware(void)
+{
+ tty = new vt100() ;
+ tty->cls() ;
+ tft = new ILI9341(SPI_8, 10000000,
+ PIN_MOSI, PIN_MISO, PIN_SCLK,
+ PIN_CS_TFT, PIN_RESET_TFT, PIN_DC_TFT, "Adafruit2.8") ;
+ initTFT() ;
+ tft->set_font((unsigned char*) Arial28x28);
+ tft->foreground(White) ;
+// tsc = new SPI_STMPE610(PIN_MOSI, PIN_MISO, PIN_SCLK, PIN_CS_TSC) ;
+ tacho = new meter(5, 5, 230, 230, 0.0, 3.3) ;
+ vin = new AnalogIn(PIN_ADC_CH0) ;
+}
+
+int main() {
+ float value = 0.0 ;
+ float prev_value = 0.0 ;
+ int intvalue = 0 ;
+ init_hardware() ;
+ *backlight = 1 ;
+
+ tacho->drawFrame() ;
+ tacho->drawScale() ;
+ while(1) {
+ value = 3.28 * vin->read() ;
+ intvalue = (int)(100.0 * value + 0.5) ;
+ value = (double)intvalue / 100.0 ;
+ if (value != prev_value) {
+ tacho->drawHand(value) ;
+ tacho->drawValue(value) ;
+ prev_value = value ;
+ }
+ wait(0.2) ;
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.h Thu Jul 20 02:37:13 2017 +0000 @@ -0,0 +1,167 @@ +/** mbed oscilloscope my implementation of a oscillo scope + * Copyright (c) 2014, 2015 Motoo Tanaka @ Design Methodology Lab + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#ifndef _MAIN_H_ +#define _MAIN_H_ included + +#if defined (TARGET_KL25Z) +#define PIN_SCLK PTD1 +#define PIN_MISO PTD3 +#define PIN_MOSI PTD2 +#define PIN_CS_TFT PTD0 +#define PIN_DC_TFT PTD5 +#define PIN_CS_TSC PTA13 +#define PIN_BL_TFT PTA12 +#define PIN_CS_SD PTA4 +#define PIN_TSC_INTR PTC9 /* place holder */ +#define PIN_RESET_TFT PTB10 /* place holder */ +#define PIN_ADC_CH0 PTB0 +#define PIN_ADC_CH1 PTB2 + +#elif defined (TARGET_KL46Z) +#define PIN_SCLK PTD5 +#define PIN_MISO PTD7 +#define PIN_MOSI PTD6 +#define PIN_CS_TFT PTD4 +#define PIN_DC_TFT PTD2 +#define PIN_CS_TSC PTA13 +#define PIN_BL_TFT PTC9 +#define PIN_CS_SD PTA4 +#define PIN_TSC_INTR PTC7 /* place holder */ +#define PIN_RESET_TFT PTC6 /* place holder */ +#define PIN_ADC_CH0 PTB0 +#define PIN_ADC_CH1 PTB2 + +#elif defined (TARGET_K64F) +#define PIN_SCLK PTD1 +#define PIN_MISO PTD3 +#define PIN_MOSI PTD2 +#define PIN_CS_TFT PTD0 +#define PIN_DC_TFT PTC4 +// for board rev E or later +#define PIN_CS_TSC PTC12 +// for earlier boards use following line +// #define PIN_CS_TSC PTA0 +#define PIN_BL_TFT PTC3 +#define PIN_CS_SD PTB23 +#define PIN_TSC_INTR PTC0 /* place holder */ +#define PIN_RESET_TFT PTC9 /* place holder */ +#define PIN_ADC_CH0 PTB2 +#define PIN_ADC_CH1 PTB10 + +#elif defined (TARGET_K22F) +#define PIN_SCLK PTD5 +#define PIN_MISO PTD7 +#define PIN_MOSI PTD6 +#define PIN_CS_TFT PTD4 +#define PIN_DC_TFT PTA1 +#define PIN_CS_TSC PTB19 +#define PIN_BL_TFT PTC6 +#define PIN_CS_SD PTA4 +#define PIN_TSC_INTR PTC7 /* place holder */ +#define PIN_RESET_TFT PTC9 /* place holder */ +#define PIN_ADC_CH0 PTB0 +#define PIN_ADC_CH1 PTC1 + +#elif defined (TARGET_NUCLEO_F411RE) +#define PIN_SCLK PA_5 +#define PIN_MISO PA_6 +#define PIN_MOSI PA_7 +#define PIN_CS_TFT PB_6 +#define PIN_DC_TFT PC_7 +#define PIN_CS_TSC PA_9 +#define PIN_BL_TFT PA_8 +#define PIN_CS_SD PB_5 +#define PIN_TSC_INTR PA_8 /* place holder */ +#define PIN_RESET_TFT PA_13 /* place holder */ +#define PIN_ADC_CH0 PA_0 +#define PIN_ADC_CH1 PA_4 + +#elif defined (TARGET_K20D50M) +#define PIN_SCLK PTD1 +#define PIN_MISO PTD3 +#define PIN_MOSI PTD2 +#define PIN_CS_TFT PTC2 +#define PIN_DC_TFT PTA2 +#define PIN_CS_TSC PTA12 +#define PIN_BL_TFT PTC4 +#define PIN_CS_SD PTC8 +#define PIN_TSC_INTR PTA4 /* place holder */ +#define PIN_RESET_TFT PTC7 /* place holder */ +#define PIN_ADC_CH0 PTC0 +#define PIN_ADC_CH1 PTD6 + +#elif defined (TARGET_RZ_A1H) +#define PIN_SCLK P10_12 +#define PIN_MISO P10_15 +#define PIN_MOSI P10_14 +#define PIN_CS_TFT P10_13 +#define PIN_DC_TFT P8_14 +#define PIN_CS_TSC P8_15 +#define PIN_BL_TFT P8_11 +#define PIN_CS_SD P4_5 +#define PIN_TSC_INTR P2_9 /* place holder */ +#define PIN_RESET_TFT P2_10 /* place holder */ +#define PIN_ADC_CH0 P1_8 +#define PIN_ADC_CH1 P1_10 +#elif defined (TARGET_MAX32600MBED) +/* I2C */ +#define PIN_SCL P2_7 +#define PIN_SDA P2_6 +/* SPI */ +#define PIN_SCLK P2_0 +#define PIN_MISO P2_2 +#define PIN_MOSI P2_1 +#define PIN_CS0 P2_3 +/* Interrupt */ +#define PIN_INT0 P2_4 +#define PIN_INT1 P2_5 +#define PIN_INT2 P1_7 +#define PIN_INT3 P1_6 +#define PIN_INT4 P1_5 +#define PIN_INT5 P1_4 +/* Analog In */ +#define PIN_AN0 AIN_0P +#define PIN_AN1 AIN_1P +#define PIN_AN2 AIN_2P +#define PIN_AN3 AIN_3P +#define PIN_AN4 AIN_4P +#define PIN_AN5 AIN_5P +#define BOARD_NAME "MAX32600MBED" + +#define PIN_CS_TFT P2_3 // D10 PTD0 +#define PIN_DC_TFT P2_4 // D9 PTD5 +#define PIN_CS_TSC P2_5 // D8 PTA13 +#define PIN_BL_TFT P1_7 // D7 PTC9 +#define PIN_CS_SD P1_4 // D4 PTA4 +#define PIN_TSC_INTR P5_4 // PTC9 /* place holder */ +#define PIN_RESET_TFT P5_5 /// PTB10 /* place holder */ +#define PIN_ADC_CH0 AIN_0P // A0 PTB0 +#define PIN_ADC_CH1 AIN_2P // A2 PTB2 + +#else + #error TARGET NOT DEFINED +#define PIN_SCLK D13 +#define PIN_MISO D12 +#define PIN_MOSI D11 +#define PIN_CS_TFT D10 +#define PIN_DC_TFT D9 +#define PIN_CS_TSC D8 +#define PIN_BL_TFT D7 +#define PIN_CS_SD D4 +#define PIN_TSC_INTR D5-inside /* place holder */ +#define PIN_RESET_TFT D4-inside /* place holder */ +#define PIN_ADC_CH0 A0 +#define PIN_ADC_CH1 A2 + +#endif + +#endif /* _MAIN_H_ */ \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Jul 20 02:37:13 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/mbed/builds/22da6e220af6 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/meter.cpp Thu Jul 20 02:37:13 2017 +0000
@@ -0,0 +1,149 @@
+#include "mbed.h"
+#include <math.h>
+#include <string.h>
+#include "ILI9341.h"
+#include "Arial12x12.h"
+#include "Arial24x23.h"
+#include "Arial28x28.h"
+#include "Arial43x48_numb.h"
+#include "SPI_STMPE610.h"
+#include "meter.h"
+#include "vt100.h"
+#include "main.h"
+
+#ifndef M_PI
+#define M_PI 3.141593
+#endif
+
+extern vt100 *tty ;
+extern ILI9341 *tft ;
+extern SPI_STMPE610 *tsc ;
+extern meter *tacho ;
+double SIN[451] ;
+double COS[451] ;
+
+static void fillTriTable(void)
+{
+ double theta ;
+ int i ;
+ for (i = 1 ; i < 450 ; i++ ) {
+ theta = M_PI * (((double)(i + 450))/1800.0) ;
+ SIN[i] = sin( theta ) ;
+ COS[i] = cos( theta ) ;
+ }
+ SIN[0] = 0.0 ;
+ COS[0] = 1.0 ;
+ SIN[450] = 1.0 ;
+ COS[450] = 0.0 ;
+}
+
+meter::meter(int x, int y, int width, int height, float min, float max)
+{
+ _x = x ;
+ _y = y ;
+ _w = width ;
+ _h = height ;
+ _value = min ;
+ _min = min ;
+ _max = max ;
+ _center_x = _x + _w / 2 ;
+ _center_y = _y + (2 * _h) / 3 ;
+ fillTriTable() ;
+}
+
+meter::~meter(void)
+{
+}
+
+void meter::drawFrame(void)
+{
+ tft->BusEnable(true) ;
+ tft->fillrect(_x, _y, _x+ _w - 1, _y+(2 * _h)/3 - 1, White) ;
+ tft->fillrect(_x, _y+(2 * _h)/3 - 1, _x + _w - 1, _y + _h - 1, Black) ;
+ tft->rect(_x, _y, _x + _w - 1, _y + _h - 1, Green) ;
+ tft->BusEnable(false) ;
+}
+
+void meter::drawScale(void)
+{
+ int x1, x2, y1, y2 ;
+ double radius ;
+ double append ;
+ radius = _w / 2.0 ;
+ tft->BusEnable(true) ;
+ for (int i = 0 ; i < 450 ; i += 45 ) {
+ x1 = (radius * COS[i] + 0.5) ;
+ y1 = (radius * SIN[i] + 0.5) ;
+ if ((i % 10) == 5) {
+ append = 5 ;
+ } else {
+ append = 10 ;
+ }
+ x2 = ((radius + append) * COS[i] + 0.5) ;
+ y2 = ((radius + append) * SIN[i] + 0.5) ;
+ tft->line(_center_x + x1, _center_y - y1, _center_x + x2, _center_y - y2, Black) ;
+ tft->line(_center_x - x1, _center_y - y1, _center_x - x2, _center_y - y2, Black) ;
+ }
+ tft->line(_center_x, _center_y - radius, _center_x, _center_y - (radius + 10), Black) ;
+ tft->BusEnable(false) ;
+}
+
+void meter::drawHand(float value)
+{
+ static int prev_x1 = 0, prev_x2 = 0, prev_y1 = 0, prev_y2 = 0 ;
+ int x1, x2, y1, y2 ;
+ double theta ;
+ double radius = _w / 20.0 ;
+ double append = 8.0 * (_w / 20.0) ;
+ int i ;
+
+ theta = 90.0 - (90.0 * (value / _max)) ;
+ if (theta > 45.0) {
+ i = (10.0 * (90.0 - theta + 45.0) + 0.5) ;
+ x1 = _center_x -(radius * COS[i-450] + 0.5) ;
+ x2 = _center_x -((radius + append) * COS[i-450] + 0.5) ;
+ } else {
+ i = (10.0 * (theta + 45.0) + 0.5) ;
+ x1 = _center_x + (radius * COS[i-450] + 0.5) ;
+ x2 = _center_x + ((radius + append) * COS[i-450] + 0.5) ;
+ }
+ y1 = _center_y - (radius * SIN[i-450] + 0.5) ;
+ y2 = _center_y - ((radius + append) * SIN[i-450] + 0.5) ;
+ tft->BusEnable(true) ;
+ tft->line(prev_x1, prev_y1, prev_x2, prev_y2, White) ;
+ tft->line(x1, y1, x2, y2, Black) ;
+ tft->BusEnable(false) ;
+ prev_x1 = x1 ;
+ prev_x2 = x2 ;
+ prev_y1 = y1 ;
+ prev_y2 = y2 ;
+}
+
+void meter::draw(void)
+{
+}
+
+void meter::draw(float value)
+{
+ tft->BusEnable(true) ;
+ drawHand(_value) ;
+ tft->BusEnable(false) ;
+}
+
+void meter::drawValue(float value)
+{
+ char str[32] ;
+ int v1, v2 ;
+ v1 = (int)value ;
+ v2 = ((int)(100.0 * value) % 100) ;
+ sprintf(str, "%d.%02d V", v1, v2) ;
+ tft->BusEnable(true) ;
+ tft->locate(80, 190) ;
+ tft->printf(str) ;
+ wait(0.01) ;
+ tft->BusEnable(false) ;
+}
+
+void meter::update(float value)
+{
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/meter.h Thu Jul 20 02:37:13 2017 +0000
@@ -0,0 +1,29 @@
+#ifndef _METER_H_
+#define _METER_H_
+
+class meter {
+public:
+meter(int x, int y, int width, int height, float min, float max) ;
+~meter(void) ;
+void drawFrame(void) ;
+void drawScale(void) ;
+void drawHand(float value) ;
+void drawValue(float value) ;
+void draw(void) ;
+void draw(float value) ;
+void update(float value) ;
+
+private:
+int _x ;
+int _y ;
+int _w ;
+int _h ;
+int _center_x ;
+int _center_y ;
+float _value ;
+float _min ;
+float _max ;
+
+} ;
+
+#endif /* _METER_H_ */
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vt100.lib Thu Jul 20 02:37:13 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/Rhyme/code/vt100/#b7229a9eae1c