Library for handling TM1638 LED display driver.
- Support for both Common Anode and Common Cathode Seven-segment displays
- Support for dimming display
- Support for scan Keypad
It is easy to port this library to any platform. But now it is ready for use in:
- AVR (ATmega32)
- STM32 (HAL)
- ESP32 (esp-idf)
- Add
TM1638.h,TM1638_config.handTM1638.cfiles to your project. It is optional to useTM1638_platform.handTM1638_platform.cfiles (open and configTM1638_platform.hfile). - Initialize platform-dependent part of handler.
- Call
TM1638_Init(). - Call
TM1638_ConfigDisplay()to config display. - Call other functions and enjoy.
Using TM1638_platform files
#include <stdio.h> #include "TM1638.h" #include "TM1638_platform.h" int main(void) { TM1638_Handler_t Handler; TM1638_Platform_Init(&Handler); TM1638_Init(&Handler, TM1638DisplayTypeComCathode); TM1638_ConfigDisplay(&Handler, 7, TM1638DisplayStateON); while (1) { // Display the number 8 and Decimal Point in the SEG1 TM1638_SetSingleDigit_HEX(&Handler, 8 | TM1638DecimalPoint, 0); } TM1638_DeInit(&Handler); return 0; }Without using TM1638_platform files (AVR)
#include <stdio.h> #include <avr/io.h> #define F_CPU 8000000 #include <util/delay.h> #include "TM1638.h" #define TM1638_DIO_DDR DDRA #define TM1638_DIO_PORT PORTA #define TM1638_DIO_PIN PINA #define TM1638_DIO_NUM 0 #define TM1638_CLK_DDR DDRA #define TM1638_CLK_PORT PORTA #define TM1638_CLK_NUM 1 #define TM1638_STB_DDR DDRA #define TM1638_STB_PORT PORTA #define TM1638_STB_NUM 2 static void TM1638_PlatformInit(void) { TM1638_CLK_DDR |= (1<<TM1638_CLK_NUM); TM1638_DIO_DDR |= (1<<TM1638_DIO_NUM); TM1638_STB_DDR |= (1<<TM1638_STB_NUM); } static void TM1638_PlatformDeInit(void) { TM1638_CLK_DDR &= ~(1<<TM1638_CLK_NUM); TM1638_CLK_PORT &= ~(1<<TM1638_CLK_NUM); TM1638_DIO_DDR &= ~(1<<TM1638_DIO_NUM); TM1638_DIO_PORT &= ~(1<<TM1638_DIO_NUM); TM1638_STB_DDR &= ~(1<<TM1638_STB_NUM); TM1638_STB_PORT &= ~(1<<TM1638_STB_NUM); } static void TM1638_DioConfigOut(void) { TM1638_DIO_DDR |= (1<<TM1638_DIO_NUM); } static void TM1638_DioConfigIn(void) { TM1638_DIO_DDR &= ~(1<<TM1638_DIO_NUM); } static void TM1638_DioWrite(uint8_t Level) { if (Level) TM1638_DIO_PORT |= (1<<TM1638_DIO_NUM); else TM1638_DIO_PORT &= ~(1<<TM1638_DIO_NUM); } static uint8_t TM1638_DioRead(void) { uint8_t Result = 1; Result = (TM1638_DIO_PIN & (1 << TM1638_DIO_NUM)) ? 1 : 0; return Result; } static void TM1638_ClkWrite(uint8_t Level) { if (Level) TM1638_CLK_PORT |= (1<<TM1638_CLK_NUM); else TM1638_CLK_PORT &= ~(1<<TM1638_CLK_NUM); } static void TM1638_StbWrite(uint8_t Level) { if (Level) TM1638_STB_PORT |= (1<<TM1638_STB_NUM); else TM1638_STB_PORT &= ~(1<<TM1638_STB_NUM); } static void TM1638_DelayUs(uint8_t Delay) { for (; Delay; --Delay) _delay_us(1); } int main(void) { TM1638_Handler_t Handler; Handler.PlatformInit = TM1638_PlatformInit; Handler.PlatformDeInit = TM1638_PlatformDeInit; Handler.DioConfigOut = TM1638_DioConfigOut; Handler.DioConfigIn = TM1638_DioConfigIn; Handler.DioWrite = TM1638_DioWrite; Handler.DioRead = TM1638_DioRead; Handler.ClkWrite = TM1638_ClkWrite; Handler.StbWrite = TM1638_StbWrite; Handler.DelayUs = TM1638_DelayUs; TM1638_Init(&Handler, TM1638DisplayTypeComCathode); TM1638_ConfigDisplay(&Handler, 7, TM1638DisplayStateON); while (1) { // Display the number 8 and Decimal Point in the SEG1 TM1638_SetSingleDigit_HEX(&Handler, 8 | TM1638DecimalPoint, 0); } TM1638_DeInit(&Handler); return 0; }