Library/DS_MAX7219
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Merge pull request 'Version 1.0' (#1) from Dev into main

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Reviewed-on: http://192.168.0.103:3000/Library/DS_MAX7219/pulls/1
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Mikhail
2024-04-30 03:46:32 -04:00
parent 598f3a2e12 0b9bd6e913
commit f9d87948d6
2 changed files with 251 additions and 0 deletions
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30
Inc/DS_MAX7219.h Normal file
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#ifndef DSMAX7219_H
#define DSMAX7219_H
#include "stm32f0xx_hal.h"
#include <stdbool.h>
typedef struct DS_MAX7219
{
SPI_HandleTypeDef* SPI;
char DisplayData[8];
uint8_t Dots;
uint8_t DecodeMode, Intensivity, ScanLimit;
bool EnableDecodeMode;
GPIO_TypeDef* Port_CS;
uint16_t Pin_CS;
}DS_MAX7219;
void DS_MAX7219_Init(DS_MAX7219* Display, SPI_HandleTypeDef* SPI, GPIO_TypeDef* Port_CS, uint16_t Pin_CS);
void DS_MAX7219_EnableDots(DS_MAX7219* Display, uint8_t Dots);
void DS_MAX7219_Print(DS_MAX7219* Display, int64_t Number);
void DS_MAX7219_UpdataDisplay(DS_MAX7219* Display);
void DS_MAX7219_ConfigureDisplay(DS_MAX7219* Display, uint8_t DecodeMode, uint8_t Intensivity, uint8_t ScanLimit);
void __DS_MAX7219_SendConfigData(DS_MAX7219* Display);
#endif //DSMAX7219_H

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Src/DS_MAX7219.c Normal file
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#include "../inc/DS_MAX7219.h"
#include <stdio.h>
void DS_MAX7219_Init(DS_MAX7219* Display, SPI_HandleTypeDef* SPI, GPIO_TypeDef* Port_CS, uint16_t Pin_CS)
{
HAL_Delay(500);
Display->SPI = SPI;
Display->DecodeMode = 0;
Display->Intensivity = 8;
Display->ScanLimit = 7;
Display->EnableDecodeMode = true;
Display->Port_CS = Port_CS;
Display->Pin_CS = Pin_CS;
for (uint8_t i = 0; i < 9; i++)
{
Display->DisplayData[i] = ' ';
}
__DS_MAX7219_SendConfigData(Display);
DS_MAX7219_UpdataDisplay(Display);
}
void DS_MAX7219_Print(DS_MAX7219* Display, int64_t Number)
{
//sprintf(Display->DisplayData, "%lld", Number);
if (Number<0)
{
Display->DisplayData[0] = '-';
Number = Number * -1;
}
else
Display->DisplayData[0] = ' ';
uint8_t t = Number/1000000;
if (t==0)
Display->DisplayData[1] = ' ';
else if (t<10)
{
Display->DisplayData[1] = t;
Number = Number - t*1000000;
}
else
{
Display->DisplayData[0] =
Display->DisplayData[1] =
Display->DisplayData[2] =
Display->DisplayData[3] =
Display->DisplayData[4] =
Display->DisplayData[5] =
Display->DisplayData[6] =
Display->DisplayData[7] = '9';
return;
}
t = Number/100000;
if ((t==0)&&(Display->DisplayData[1] == ' '))
Display->DisplayData[2] = ' ';
else
{
Display->DisplayData[2] = t;
Number = Number - t*100000;
}
t = Number/10000;
if ((t==0)&&(Display->DisplayData[2] == ' '))
Display->DisplayData[3] = ' ';
else
{
Display->DisplayData[3] = t;
Number = Number - t*10000;
}
t = Number/1000;
if ((t==0)&&(Display->DisplayData[3] == ' '))
Display->DisplayData[4] = ' ';
else
{
Display->DisplayData[4] = t;
Number = Number - t*1000;
}
t = Number/100;
if ((t==0)&&(Display->DisplayData[4] == ' '))
Display->DisplayData[5] = ' ';
else
{
Display->DisplayData[5] = t;
Number = Number - t*100;
}
t = Number/10;
if ((t==0)&&(Display->DisplayData[5] == ' '))
Display->DisplayData[6] = ' ';
else
{
Display->DisplayData[6] = t;
Number = Number - t*10;
}
Display->DisplayData[7] = Number;
}
uint8_t __DS_MAX7219_ConvertSymbol(char Symbol)
{
switch (Symbol)
{
case '0':
return 0;
break;
case '1':
return 1;
break;
case '2':
return 2;
break;
case '3':
return 3;
break;
case '4':
return 4;
break;
case '5':
return 5;
break;
case '6':
return 6;
break;
case '7':
return 7;
break;
case '8':
return 8;
break;
case '9':
return 9;
break;
case '-':
return 10;
break;
case 'E':
return 11;
break;
case 'H':
return 12;
break;
case 'L':
return 13;
break;
case 'P':
return 14;
break;
case ' ':
return 15;
break;
default:
break;
}
return Symbol;
}
void DS_MAX7219_UpdataDisplay(DS_MAX7219 *Display)
{
for (uint8_t i = 0; i < 8; i++)
{
HAL_GPIO_WritePin(Display->Port_CS, Display->Pin_CS, GPIO_PIN_RESET);
uint16_t Data = (i+1<<8) + __DS_MAX7219_ConvertSymbol(Display->DisplayData[7-i]);
HAL_SPI_Transmit(Display->SPI, (uint8_t*) &Data, 1, 100);
HAL_GPIO_WritePin(Display->Port_CS, Display->Pin_CS, GPIO_PIN_SET);
}
}
void DS_MAX7219_ConfigureDisplay(DS_MAX7219 *Display, uint8_t DecodeMode, uint8_t Intensivity, uint8_t ScanLimit)
{
Display->DecodeMode = DecodeMode;
if(Intensivity>0xF)
Display->Intensivity = 0xF;
else
Display->Intensivity = Intensivity;
if(ScanLimit>0x7)
Display->ScanLimit = 0x7;
else
Display->ScanLimit = ScanLimit;
__DS_MAX7219_SendConfigData(Display);
}
void __DS_MAX7219_SendConfigData(DS_MAX7219 *Display)
{
uint16_t Data[5];
// 0 - Decode mode 0x9
// 1 - Intensivity 0xA
// 2 - ScanLimit 0xB
// 3 - Shutdown mode 0xC
// 4 - Display test 0xF
if (Display->EnableDecodeMode)
Data[0]=0x9FF;
else
Data[0]=0x900;
Data[1] = 0xA00 + Display->Intensivity;
Data[2] = 0xB00 + Display->ScanLimit;
Data[3] = 0xC00 + 1;
Data[4] = 0xF00 + 0;
for (uint8_t i = 0; i < 5; i++)
{
HAL_GPIO_WritePin(Display->Port_CS, Display->Pin_CS, GPIO_PIN_RESET);
HAL_SPI_Transmit(Display->SPI, (uint8_t*) &Data[i], 1, 100);
HAL_GPIO_WritePin(Display->Port_CS, Display->Pin_CS, GPIO_PIN_SET);
}
}