ST7735R

Readme
 
This is a C language project that demonstrates the serial peripheral interface (SPI). This project interfaces the ST7735R LCD to the microcontroller. main1 tests the reset signal to the LCD. main2 tests the SPI_OutCommand to the LCD. main3 demonstrates character and numerical outputs to the LCD. main samples the microphone and plots the measurements on the LCD.
 
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This driver implements special characters, known as extended ASCII.

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Derived from Texas Instrument code
  • spi_controller_multibyte_fifo_poll_LP_MSPM0G3507_nortos_ticlang
  • spi_controller_command_data_control_LP_MSPM0G3507_nortos_ticlang
  • spi_peripheral_register_format_LP_MSPM0G3507_nortos_ticlang

Hardware Required

  • MSPM0G3507 LaunchPad™ Development Kit (LP-MSPM0G3507)
  • We have tested 5 verions of the 160by128 pixel ST7735R
    1. Adafruit ST7735R Product ID: 358
    2. HiLetgo ST7735 TFT and SDC
    3. wide.hk ST7735R with ADXL335 accelerometer
    4. wide.hk ST7735R with ADXL345 accelerometer
    5. Tyenaza Tyenazaqhf72mi9s3
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Pin assignments

The following shows the wiring for the Adafruit ST7735R. See the source code in ST7735.c for wiring other displays.

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  • SPI1 SCLK: PB9 is ST7735R LCD clock CLK
  • SPI1 CS0: PB6 is ST7735R LCD chip select TFT_CS
  • SPI1 PICO: PB8 is ST7735R LCD data MOSI
  • Output: PB15 is ST7735R LCD !RST
  • Output: PA13 is ST7735R LCD RS
  • Output: PA0 is red LED1, index 0 in IOMUX PINCM table
  • Output: PB22 is blue LED2, index 49 in IOMUX PINCM table
  • Output: PB26 is red LED2, index 56 in IOMUX PINCM table
  • Output: PB27 is green LED2, index 57 in IOMUX PINCM table
  • Input: PA18 is S2 positive logic switch, index 39 in IOMUX PINCM table
  • Input: PB21 is S3 negative logic switch, index 48 in IOMUX PINCM table
LaunchPad Jumpers
  • Remove J16 J17 J18: Disconnects light sensor from the microcontroller PA22 PA27 PA26
  • J4: Connects PA0 to red LED
  • J5: Connects PB22 to blue LED2
  • J6: Connects PB26 to red LED2
  • J7: Connects PB27 to green LED2

Simplified BSD License (FreeBSD License) Copyright © 2023, Jonathan Valvano, All rights reserved.
 
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