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Ignore whitespace Rev 341 → Rev 342

/PIC Projects/PICX_27J13/display_led_HT16K33.c
0,0 → 1,132
#include "display_led_HT16K33.h"
#include "base_I2C.h"
 
static const char numbertable[] = {
0x3F /* 0 */,
0x06 /* 1 */,
0x5B /* 2 */,
0x4F /* 3 */,
0x66 /* 4 */,
0x6D /* 5 */,
0x7D, /* 6 */
0x07, /* 7 */
0x7F, /* 8 */
0x6F, /* 9 */
};
 
static const char alphatable[] = {
0x77, /* a */
0x7C, /* b */
0x39, /* C */
0x5E, /* d */
0x79, /* E */
0x71, /* F */
};
 
static LED_DATA *led_data_p;
 
void LED_Init(LED_DATA *data) {
led_data_p = data;
led_data_p->i2c_address = HT16K33_ADDRESS;
}
 
void LED_Start() {
char c = 0x21; // Cmd to turn on oscillator
I2C_Master_Send(led_data_p->i2c_address, 1, &c);
char result = I2C_Get_Status();
while (!result) {
result = I2C_Get_Status();
}
 
LED_Blink_Rate(HT16K33_BLINK_OFF);
LED_Set_Brightness(15); // Max brightness
LED_Clear();
LED_Write_Display();
}
 
void LED_Set_Brightness(char c) {
if (c > 15) c = 15;
c |= 0xE0;
 
I2C_Master_Send(led_data_p->i2c_address, 1, &c);
char result = I2C_Get_Status();
while (!result) {
result = I2C_Get_Status();
}
}
 
void LED_Blink_Rate(char c) {
char buffer;
 
if (c > 3) c = 0;
 
buffer = HT16K33_BLINK_CMD | HT16K33_BLINK_DISPLAYON | (c << 1);
 
I2C_Master_Send(led_data_p->i2c_address, 1, &buffer);
buffer = I2C_Get_Status();
while (!buffer) {
buffer = I2C_Get_Status();
}
}
 
void LED_Write_Display() {
led_data_p->display_buffer[0] = 0x00; // Start at address 0x00
I2C_Master_Send(led_data_p->i2c_address, 17, led_data_p->display_buffer);
 
char result = I2C_Get_Status();
while (!result) {
result = I2C_Get_Status();
}
}
 
void LED_Clear() {
for (char c = 0; c < 17; c++) {
led_data_p->display_buffer[c] = 0;
}
}
 
void LED_Draw_Colon(char c) {
if (c) {
led_data_p->display_buffer[5] = 0xFF;
} else {
led_data_p->display_buffer[5] = 0;
}
}
 
void LED_Write_Digit_Raw(char loc, char bitmask) {
if (loc > 4) return;
led_data_p->display_buffer[(loc<<1)+1] = bitmask;
}
 
void LED_Write_Digit_Num(char loc, char num, char dot) {
if (loc > 4) return;
if (loc > 1) loc++;
LED_Write_Digit_Raw(loc, numbertable[num] | dot << 7);
}
 
void LED_Write_Digit_Alpha(char loc, char alpha, char dot) {
if (loc > 4) return;
if (loc > 1) loc++;
LED_Write_Digit_Raw(loc, alphatable[alpha] | dot << 7);
}
 
void LED_Write_Num(int i) {
LED_Write_Digit_Num(0, (i%10000)/1000, 0);
LED_Write_Digit_Num(1, (i%1000)/100, 0);
LED_Write_Digit_Num(2, (i%100)/10, 0);
LED_Write_Digit_Num(3, i%10, 0);
 
if (i < 10) {
LED_Write_Digit_Raw(0, 0);
LED_Write_Digit_Raw(1, 0);
LED_Write_Digit_Raw(3, 0);
} else if (i < 100) {
LED_Write_Digit_Raw(0, 0);
LED_Write_Digit_Raw(1, 0);
} else if (i < 1000) {
LED_Write_Digit_Raw(0, 0);
}
LED_Write_Display();
}