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Dependencies:   MCP342x ssd1306_library

main.cpp@1:c410db7a0673, 2019-12-16 (annotated)

Committer:
makermax
Date:
Mon Dec 16 14:38:54 2019 +0000
Revision:
1:c410db7a0673
Parent:
0:fcf0df749468 
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
makermax 1:c410db7a0673 1 /**
makermax 1:c410db7a0673 2 ******************************************************************************
makermax 1:c410db7a0673 3 * File Name : MAIN.CPP
makermax 1:c410db7a0673 4 * Description : DEMO CODE FOR THE ION HARDWARE KIT
makermax 1:c410db7a0673 5 * DATE : DEC 15 2019
makermax 1:c410db7a0673 6 ******************************************************************************
makermax 1:c410db7a0673 7 ** This notice applies to any and all portions of this file
makermax 1:c410db7a0673 8 * that are not between comment pairs USER CODE BEGIN and
makermax 1:c410db7a0673 9 * USER CODE END. Other portions of this file, whether
makermax 1:c410db7a0673 10 * inserted by the user or by software development tools
makermax 1:c410db7a0673 11 * are owned by their respective copyright owners.
makermax 1:c410db7a0673 12 *
makermax 1:c410db7a0673 13 * COPYRIGHT(c) 2019 MAKERMAX INC.
makermax 1:c410db7a0673 14 *
makermax 1:c410db7a0673 15 * Redistribution and use in source and binary forms, with or without modification,
makermax 1:c410db7a0673 16 * are permitted provided that the following conditions are met:
makermax 1:c410db7a0673 17 * 1. Redistributions of source code must retain the above copyright notice,
makermax 1:c410db7a0673 18 * this list of conditions and the following disclaimer.
makermax 1:c410db7a0673 19 * 2. Redistributions in binary form must reproduce the above copyright notice,
makermax 1:c410db7a0673 20 * this list of conditions and the following disclaimer in the documentation
makermax 1:c410db7a0673 21 * and/or other materials provided with the distribution.
makermax 1:c410db7a0673 22 * 3. Neither the name of MAKERMAX INC. nor the names of its contributors
makermax 1:c410db7a0673 23 * may be used to endorse or promote products derived from this software
makermax 1:c410db7a0673 24 * without specific prior written permission.
makermax 1:c410db7a0673 25 *
makermax 1:c410db7a0673 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
makermax 1:c410db7a0673 27 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
makermax 1:c410db7a0673 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
makermax 1:c410db7a0673 29 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
makermax 1:c410db7a0673 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
makermax 1:c410db7a0673 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
makermax 1:c410db7a0673 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
makermax 1:c410db7a0673 33 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
makermax 1:c410db7a0673 34 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
makermax 1:c410db7a0673 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
makermax 1:c410db7a0673 36 *
makermax 1:c410db7a0673 37 ******************************************************************************/
makermax 1:c410db7a0673 38
makermax 0:fcf0df749468 39
makermax 0:fcf0df749468 40 #include "mbed.h"
makermax 1:c410db7a0673 41 #include "mcp342x.h"
makermax 1:c410db7a0673 42 #include "ssd1306.h"
makermax 1:c410db7a0673 43
makermax 1:c410db7a0673 44 Serial device(USBTX, USBRX); // tx, rx
makermax 1:c410db7a0673 45 SSD1306 lcd (I2C_SDA, I2C_SCL);
makermax 1:c410db7a0673 46
makermax 1:c410db7a0673 47 int16_t getAdcData(MCP342X *mcp3428, MCP342X::AdcChannel ch, MCP342X::SampleSetting s) {
makermax 1:c410db7a0673 48 //Configure channel and trigger.
makermax 1:c410db7a0673 49 mcp3428->setChannel(ch);
makermax 1:c410db7a0673 50 mcp3428->setSampleSetting(s);
makermax 1:c410db7a0673 51 mcp3428->trigger();
makermax 1:c410db7a0673 52
makermax 1:c410db7a0673 53 // polling data
makermax 1:c410db7a0673 54 MCP342X::Data data;
makermax 1:c410db7a0673 55 do {
makermax 1:c410db7a0673 56 wait_us(100000);
makermax 1:c410db7a0673 57 mcp3428->getData(&data);
makermax 1:c410db7a0673 58 } while(data.st == MCP342X::DATA_NOT_UPDATED);
makermax 1:c410db7a0673 59
makermax 1:c410db7a0673 60 return data.value;
makermax 1:c410db7a0673 61 }
makermax 1:c410db7a0673 62
makermax 1:c410db7a0673 63 #define I2C_SPEED_100KHZ 100000
makermax 1:c410db7a0673 64 #define PIN_SERIAL_TX P0_4
makermax 1:c410db7a0673 65 #define PIN_SERIAL_RX P0_5
makermax 1:c410db7a0673 66
makermax 1:c410db7a0673 67 DigitalOut myled(LED1);
makermax 1:c410db7a0673 68 AnalogOut aout(A2);
makermax 1:c410db7a0673 69 AnalogOut aout2(D13);
makermax 1:c410db7a0673 70
makermax 1:c410db7a0673 71
makermax 1:c410db7a0673 72
makermax 1:c410db7a0673 73 float voltage=0; //ch3
makermax 1:c410db7a0673 74 float chg=0; //ch1
makermax 1:c410db7a0673 75 float dchg=0; //ch2
makermax 1:c410db7a0673 76 float temp=0; //ch4
makermax 1:c410db7a0673 77 float cshunt=0.2;
makermax 1:c410db7a0673 78 float dshunt=0.2;
makermax 0:fcf0df749468 79
makermax 0:fcf0df749468 80
makermax 1:c410db7a0673 81 int main() {
makermax 1:c410db7a0673 82 // Instanciate I2C
makermax 1:c410db7a0673 83 I2C i2c(I2C_SDA, I2C_SCL);
makermax 1:c410db7a0673 84 i2c.frequency(I2C_SPEED_100KHZ);
makermax 1:c410db7a0673 85
makermax 1:c410db7a0673 86 // Serial output for debug. (optional)
makermax 1:c410db7a0673 87
makermax 1:c410db7a0673 88 MCP342X mcp342x(&i2c, MCP342X::SLAVE_ADDRESS_68H);
makermax 1:c410db7a0673 89 mcp342x.setConversionMode(MCP342X::ONE_SHOT);
makermax 1:c410db7a0673 90
makermax 1:c410db7a0673 91 while(1) {
makermax 1:c410db7a0673 92 aout.write_u16(0);
makermax 1:c410db7a0673 93 aout2.write_u16(30000); // 0 - 65500
makermax 1:c410db7a0673 94 HAL_Delay(100);
makermax 1:c410db7a0673 95
makermax 1:c410db7a0673 96 // Supposes that the device is MCP3428, which has 4 channels.
makermax 1:c410db7a0673 97 const uint8_t CHANNEL_NUM = 4;
makermax 1:c410db7a0673 98 // Sampling setting. Ch1 is 12-bit, Ch2 is 14-bit, Ch3 is 16-bit, Ch4 is 16-bit.
makermax 1:c410db7a0673 99 const MCP342X::SampleSetting sampleSetting[CHANNEL_NUM] =
makermax 1:c410db7a0673 100 {MCP342X::SAMPLE_15HZ_16BIT, MCP342X::SAMPLE_15HZ_16BIT,
makermax 1:c410db7a0673 101 MCP342X::SAMPLE_15HZ_16BIT, MCP342X::SAMPLE_15HZ_16BIT};
makermax 1:c410db7a0673 102 // Data buffer.
makermax 1:c410db7a0673 103 int16_t data[CHANNEL_NUM];
makermax 1:c410db7a0673 104 // Measures each channel.
makermax 1:c410db7a0673 105 for (int i=0; i < CHANNEL_NUM; i++) {
makermax 1:c410db7a0673 106 data[i]=getAdcData(&mcp342x, (MCP342X::AdcChannel)i, sampleSetting[i]);
makermax 1:c410db7a0673 107 }
makermax 1:c410db7a0673 108 // Prints out the ADC results.
makermax 1:c410db7a0673 109 device.printf("%d, %d, %d, %d\r\n", data[0], data[1], data[2], data[3]);
makermax 1:c410db7a0673 110
makermax 1:c410db7a0673 111 chg=float(data[0]);
makermax 1:c410db7a0673 112 chg=chg/32767;
makermax 1:c410db7a0673 113 chg=chg*2.048;
makermax 1:c410db7a0673 114 chg=chg/cshunt;
makermax 1:c410db7a0673 115
makermax 1:c410db7a0673 116 dchg=float(data[1]);
makermax 1:c410db7a0673 117 dchg=dchg/32767;
makermax 1:c410db7a0673 118 dchg=dchg*2.048;
makermax 1:c410db7a0673 119 dchg=dchg/dshunt;
makermax 1:c410db7a0673 120
makermax 1:c410db7a0673 121 voltage=float(data[2]);
makermax 1:c410db7a0673 122 voltage=voltage/32767;
makermax 1:c410db7a0673 123 voltage=voltage*2.048;
makermax 1:c410db7a0673 124 voltage=voltage/0.3197;
makermax 0:fcf0df749468 125
makermax 0:fcf0df749468 126
makermax 1:c410db7a0673 127 temp=float(data[3]);
makermax 1:c410db7a0673 128 temp=temp/32767;
makermax 1:c410db7a0673 129 temp=temp*2.048;
makermax 1:c410db7a0673 130
makermax 1:c410db7a0673 131 lcd.speed (SSD1306::Slow); // set working frequency
makermax 1:c410db7a0673 132 lcd.init(); // initialize SSD1306
makermax 1:c410db7a0673 133 lcd.cls(); // clear frame buffer
makermax 1:c410db7a0673 134 lcd.locate (2,1); // set text cursor to line 3, column 1
makermax 1:c410db7a0673 135 lcd.printf ("ch1=%f",chg); // print to frame buffer
makermax 1:c410db7a0673 136 lcd.locate (3,1);
makermax 1:c410db7a0673 137 lcd.printf ("ch2=%f",dchg);
makermax 1:c410db7a0673 138 lcd.locate (4,1);
makermax 1:c410db7a0673 139 lcd.printf ("ch3=%f",voltage);
makermax 1:c410db7a0673 140 lcd.locate (5,1);
makermax 1:c410db7a0673 141 lcd.printf ("ch4=%f",temp);
makermax 1:c410db7a0673 142
makermax 1:c410db7a0673 143 lcd.line ( 6, 12, 114, 12, SSD1306::Normal); //
makermax 1:c410db7a0673 144 lcd.line (114, 64, 114, 12, SSD1306::Normal); // Surrounds text with
makermax 1:c410db7a0673 145 lcd.line (114, 62, 6, 62, SSD1306::Normal); // a rectangle
makermax 1:c410db7a0673 146 lcd.line ( 6, 64, 6, 12, SSD1306::Normal); //
makermax 1:c410db7a0673 147 //lcd.fill (255, 255); // fills screen outside rectangle
makermax 1:c410db7a0673 148 lcd.redraw(); // updates actual display transferring frame buffer over I2C bus
makermax 1:c410db7a0673 149
makermax 1:c410db7a0673 150 HAL_Delay(5000);
makermax 1:c410db7a0673 151 aout2.write_u16(0); // 0 - 65500
makermax 1:c410db7a0673 152 aout.write_u16(30000);
makermax 1:c410db7a0673 153
makermax 1:c410db7a0673 154
makermax 1:c410db7a0673 155 for (int i=0; i < CHANNEL_NUM; i++) {
makermax 1:c410db7a0673 156 data[i]=getAdcData(&mcp342x, (MCP342X::AdcChannel)i, sampleSetting[i]);
makermax 1:c410db7a0673 157 }
makermax 1:c410db7a0673 158 // Prints out the ADC results.
makermax 1:c410db7a0673 159 device.printf("%d, %d, %d, %d\r\n", data[0], data[1], data[2], data[3]);
makermax 0:fcf0df749468 160
makermax 1:c410db7a0673 161 chg=float(data[0]);
makermax 1:c410db7a0673 162 chg=chg/32767;
makermax 1:c410db7a0673 163 chg=chg*2.048;
makermax 1:c410db7a0673 164 chg=chg/cshunt;
makermax 1:c410db7a0673 165
makermax 1:c410db7a0673 166 dchg=float(data[1]);
makermax 1:c410db7a0673 167 dchg=dchg/32767;
makermax 1:c410db7a0673 168 dchg=dchg*2.048;
makermax 1:c410db7a0673 169 dchg=dchg/dshunt;
makermax 1:c410db7a0673 170
makermax 1:c410db7a0673 171 voltage=float(data[2]);
makermax 1:c410db7a0673 172 voltage=voltage/32767;
makermax 1:c410db7a0673 173 voltage=voltage*2.048;
makermax 1:c410db7a0673 174 voltage=voltage/0.3197;
makermax 1:c410db7a0673 175
makermax 1:c410db7a0673 176
makermax 1:c410db7a0673 177 temp=float(data[3]);
makermax 1:c410db7a0673 178 temp=temp/32767;
makermax 1:c410db7a0673 179 temp=temp*2.048;
makermax 1:c410db7a0673 180
makermax 1:c410db7a0673 181 lcd.speed (SSD1306::Slow); // set working frequency
makermax 1:c410db7a0673 182 lcd.init(); // initialize SSD1306
makermax 1:c410db7a0673 183 lcd.cls(); // clear frame buffer
makermax 1:c410db7a0673 184 lcd.locate (2,1); // set text cursor to line 3, column 1
makermax 1:c410db7a0673 185 lcd.printf ("ch1=%f",chg); // print to frame buffer
makermax 1:c410db7a0673 186 lcd.locate (3,1);
makermax 1:c410db7a0673 187 lcd.printf ("ch2=%f",dchg);
makermax 1:c410db7a0673 188 lcd.locate (4,1);
makermax 1:c410db7a0673 189 lcd.printf ("ch3=%f",voltage);
makermax 1:c410db7a0673 190 lcd.locate (5,1);
makermax 1:c410db7a0673 191 lcd.printf ("ch4=%f",temp);
makermax 1:c410db7a0673 192
makermax 1:c410db7a0673 193 lcd.line ( 6, 12, 114, 12, SSD1306::Normal); //
makermax 1:c410db7a0673 194 lcd.line (114, 64, 114, 12, SSD1306::Normal); // Surrounds text with
makermax 1:c410db7a0673 195 lcd.line (114, 62, 6, 62, SSD1306::Normal); // a rectangle
makermax 1:c410db7a0673 196 lcd.line ( 6, 64, 6, 12, SSD1306::Normal); //
makermax 1:c410db7a0673 197 //lcd.fill (255, 255); // fills screen outside rectangle
makermax 1:c410db7a0673 198 lcd.redraw(); // updates actual display transferring frame buffer over I2C bus
makermax 1:c410db7a0673 199 HAL_Delay(5000);
makermax 1:c410db7a0673 200
makermax 1:c410db7a0673 201
makermax 1:c410db7a0673 202
makermax 0:fcf0df749468 203 }
makermax 0:fcf0df749468 204 }
makermax 1:c410db7a0673 205
makermax 1:c410db7a0673 206