![](/media/cache/group/ON-Semiconductor.jpg.50x50_q85.jpg)
mbed example application for the Adafruit ST7735 TFT Shield, which implements SPI connections to the TFT shield and SD card, as well as an ADC to read from the analog in pins.
Dependencies: Adafruit_GFX Adafruit_ST7735 SDFileSystem mbed-os
Fork of mbed-TFT-example-NCS36510 by
main.cpp@3:81a34c232d99, 2017-02-27 (annotated)
- Committer:
- jacobjohnson
- Date:
- Mon Feb 27 17:49:04 2017 +0000
- Revision:
- 3:81a34c232d99
- Parent:
- 2:fa3fb1787cf8
Working mbed-TFT example. functionality for TFT screen, reading a 24 bit BMP from the SD card, logging data files to SD card, and reading the analog in Joystick. This revision depends on the inputscale factor for ADC to be 7. Future change in main
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jacobjohnson | 2:fa3fb1787cf8 | 1 | /*************************************** |
jacobjohnson | 3:81a34c232d99 | 2 | Example Application for the Adafruit ST7735 TFT Shield |
jacobjohnson | 3:81a34c232d99 | 3 | on the ON Semiconductor NCS36510 mbed Board |
jacobjohnson | 2:fa3fb1787cf8 | 4 | ***************************************/ |
jacobjohnson | 2:fa3fb1787cf8 | 5 | |
jacobjohnson | 0:8fbbced097c5 | 6 | #include "mbed.h" |
jacobjohnson | 2:fa3fb1787cf8 | 7 | #include "Adafruit_ST7735.h" |
jacobjohnson | 2:fa3fb1787cf8 | 8 | #include "SDFileSystem.h" |
jacobjohnson | 3:81a34c232d99 | 9 | #include <string> |
jacobjohnson | 3:81a34c232d99 | 10 | #include <sstream> |
jacobjohnson | 3:81a34c232d99 | 11 | |
jacobjohnson | 3:81a34c232d99 | 12 | using namespace std; |
jacobjohnson | 3:81a34c232d99 | 13 | |
jacobjohnson | 0:8fbbced097c5 | 14 | |
jacobjohnson | 0:8fbbced097c5 | 15 | DigitalOut led1(LED1); |
jacobjohnson | 3:81a34c232d99 | 16 | AnalogIn adc_in_3(A3); |
jacobjohnson | 3:81a34c232d99 | 17 | AnalogIn adc_in_2(A2); |
jacobjohnson | 3:81a34c232d99 | 18 | |
jacobjohnson | 2:fa3fb1787cf8 | 19 | SDFileSystem sd(D11, D12, D13, D4, "SD"); // the pinout on the mbed // mosi, miso, sclk, cs |
jacobjohnson | 2:fa3fb1787cf8 | 20 | Adafruit_ST7735 tft(D11, D12, D13, D10, D6, D9); // MOSI, MISO, SCLK, SSEL, TFT_DC, TFT_RST |
jacobjohnson | 0:8fbbced097c5 | 21 | |
jacobjohnson | 3:81a34c232d99 | 22 | Serial PC(USBTX, USBRX); |
jacobjohnson | 3:81a34c232d99 | 23 | |
jacobjohnson | 2:fa3fb1787cf8 | 24 | |
jacobjohnson | 0:8fbbced097c5 | 25 | int main() { |
jacobjohnson | 3:81a34c232d99 | 26 | PC.printf("start"); |
jacobjohnson | 3:81a34c232d99 | 27 | |
jacobjohnson | 2:fa3fb1787cf8 | 28 | tft.initR(INITR_BLACKTAB); // initialize a ST7735S chip, black tab |
jacobjohnson | 2:fa3fb1787cf8 | 29 | tft.fillScreen(ST7735_BLACK); |
jacobjohnson | 3:81a34c232d99 | 30 | tft.DrawBitmapFile("/SD/ON.bmp"); //Note, this must be a 24-bit Bitmap file, with a resolution less than 128x160 pixels |
jacobjohnson | 0:8fbbced097c5 | 31 | |
jacobjohnson | 3:81a34c232d99 | 32 | float a, b; |
jacobjohnson | 3:81a34c232d99 | 33 | uint32_t file_index = 0; |
jacobjohnson | 3:81a34c232d99 | 34 | |
jacobjohnson | 2:fa3fb1787cf8 | 35 | while (true) { |
jacobjohnson | 2:fa3fb1787cf8 | 36 | |
jacobjohnson | 3:81a34c232d99 | 37 | stringstream temp_str; |
jacobjohnson | 3:81a34c232d99 | 38 | temp_str<<(file_index); |
jacobjohnson | 3:81a34c232d99 | 39 | string filename_str = "/SD/data" + temp_str.str() + ".csv"; |
jacobjohnson | 3:81a34c232d99 | 40 | const char* filename_cstr = filename_str.c_str(); |
jacobjohnson | 3:81a34c232d99 | 41 | FILE *fp = fopen(filename_cstr, "w"); |
jacobjohnson | 3:81a34c232d99 | 42 | led1=1; |
jacobjohnson | 3:81a34c232d99 | 43 | |
jacobjohnson | 2:fa3fb1787cf8 | 44 | |
jacobjohnson | 3:81a34c232d99 | 45 | uint32_t i = 0; |
jacobjohnson | 3:81a34c232d99 | 46 | while (i < 50){ |
jacobjohnson | 3:81a34c232d99 | 47 | a = adc_in_3.read(); /* Read the converted analog value */ |
jacobjohnson | 3:81a34c232d99 | 48 | b = adc_in_2.read(); |
jacobjohnson | 3:81a34c232d99 | 49 | fprintf(fp,"%f\n", a); |
jacobjohnson | 3:81a34c232d99 | 50 | tft.setTextColor(ST7735_GREEN, ST7735_BLACK); //(Text Color, Background color) |
jacobjohnson | 3:81a34c232d99 | 51 | tft.setTextCursor(0, 120); |
jacobjohnson | 3:81a34c232d99 | 52 | tft.printf("ADC 3: %f\n\rADC 2: %f\n\r", (a), (b)); |
jacobjohnson | 3:81a34c232d99 | 53 | if (a < 0.1){tft.printf("Joystick: LEFT ");} |
jacobjohnson | 3:81a34c232d99 | 54 | else if (a > 0.1 && a < .2){tft.printf("Joystick: DOWN ");} |
jacobjohnson | 3:81a34c232d99 | 55 | else if (a > 0.2 && a < .3){tft.printf("Joystick: PUSHED ");} |
jacobjohnson | 3:81a34c232d99 | 56 | else if (a > 0.3 && a < .65){tft.printf("Joystick: RIGHT ");} |
jacobjohnson | 3:81a34c232d99 | 57 | else if (a > 0.65 && a < .725){tft.printf("Joystick: UP ");} |
jacobjohnson | 3:81a34c232d99 | 58 | else if (a > 0.725){tft.printf("Joystick: DEFAULT");} |
jacobjohnson | 3:81a34c232d99 | 59 | wait_ms(.5); |
jacobjohnson | 3:81a34c232d99 | 60 | i++; |
jacobjohnson | 3:81a34c232d99 | 61 | } |
jacobjohnson | 3:81a34c232d99 | 62 | fclose(fp); |
jacobjohnson | 3:81a34c232d99 | 63 | led1=0; |
jacobjohnson | 3:81a34c232d99 | 64 | file_index++; |
jacobjohnson | 3:81a34c232d99 | 65 | |
jacobjohnson | 2:fa3fb1787cf8 | 66 | |
jacobjohnson | 0:8fbbced097c5 | 67 | } |
jacobjohnson | 0:8fbbced097c5 | 68 | } |
jacobjohnson | 0:8fbbced097c5 | 69 |