![](/media/cache/group/JapanDisplayInc_logo.jpg.50x50_q85.jpg)
Check refresh speed by transfermode 4bit,3bit,1bit with MIP8F_SPI_Ver50
Dependencies: MIP8F_SPI_Ver50 MIP8f_FRDM_LineBuffer_sample mbed
Dependents: MIP8f_FRDM_Animation_sample
Introduction
this sample is checking the refresh display speed between 4bit,3bit and 1bit transfer mode.
- spi-transfer to Display has 3 mode. 4bit mode is color display, this bit arrange is R,G,B,x. R,G,B = R,G,B subpixel bit. x bit is Dummy. 3bit mode is color display, this bit arrange is R,G,B. R,G,B = R,G,B subpixel bit. No bit is Dummy. 1bit mode is monocrome display,high speed refresh mode. a only Green subpixel of bitmap data is transfered.
Other information , please refer to https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
Usage
Copy Setting File and Image to micro SD-CARD. you can NOT use same sample color images of OTHER VERSION SAMPLE.
a) Download the following file corresponding to the target panel, and rename file identifier (.bin -> .zip), and unzip the file on micro SD Card's root directory.
LPM027M128x (400x240) :/media/uploads/JDI_Mbed_Team/400x240_ver30.bin
b) Insert micro SD-CARD to FRDM-K64F. c) Upload binary file to FRDM-K64F.and push Reset Button.
Other information
refer to Usage on https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
this Sample Code (.bin)
/media/uploads/JDI_Mbed_Team/mip8f_frdm_transfermode_sample.k64f.bin
Adafruit_LEDBackpack/Adafruit_LEDBackpack.h
- Committer:
- JDI_Mbed_Team
- Date:
- 2018-11-12
- Revision:
- 16:7c472f8a81a5
- Parent:
- 0:33fe30a2b785
File content as of revision 16:7c472f8a81a5:
/*************************************************** This is a library for our I2C LED Backpacks Designed specifically to work with the Adafruit LED Matrix backpacks ----> http://www.adafruit.com/products/ ----> http://www.adafruit.com/products/ These displays use I2C to communicate, 2 pins are required to interface. There are multiple selectable I2C addresses. For backpacks with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks with 3 Address Select pins: 0x70 thru 0x77 Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/ /* * Modified by Luiz Hespanha (http://www.d3.do) 8/16/2013 for use in LPC1768 */ #include "mbed.h" #include "Adafruit_GFX.h" #define LED_ON 1 #define LED_OFF 0 #define LED_RED 1 #define LED_YELLOW 2 #define LED_GREEN 3 #define HT16K33_BLINK_CMD 0x80 #define HT16K33_BLINK_DISPLAYON 0x01 #define HT16K33_BLINK_OFF 0 #define HT16K33_BLINK_2HZ 1 #define HT16K33_BLINK_1HZ 2 #define HT16K33_BLINK_HALFHZ 3 #define HT16K33_CMD_BRIGHTNESS 0x0E // this is the raw HT16K33 controller class Adafruit_LEDBackpack { public: Adafruit_LEDBackpack(I2C *i2c); void begin(uint8_t _addr); void setBrightness(uint8_t b); void blinkRate(uint8_t b); void writeDisplay(void); void clear(void); uint16_t displaybuffer[8]; void init(uint8_t a); protected: I2C *_i2c; private: uint8_t i2c_addr; }; class Adafruit_8x8matrix : public Adafruit_LEDBackpack, public Adafruit_GFX { public: Adafruit_8x8matrix(I2C *i2c); void drawPixel(int16_t x, int16_t y, uint16_t color); private: };