| 0,0 → 1,137 |
|---|
| #include "led_HT16K33.h" |
| #include "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; |
| static LED_DATA *led_data_p = &led_data; |
| |
| void LED_Init() { |
| led_data_p->i2c_address = 0x70; |
| } |
| |
| void LED_Start() { |
| unsigned char result; |
| unsigned char c = 0x21; // Cmd to turn on oscillator |
| |
| I2C_Master_Send(led_data_p->i2c_address, 1, &c); |
| result = I2C_Get_Status(); |
| while (!result) { |
| result = I2C_Get_Status(); |
| } |
| |
| LED_blinkRate(HT16K33_BLINK_OFF); |
| LED_setBrightness(15); // Max brightness |
| LED_clear(); |
| LED_writeDisplay(); |
| } |
| |
| void LED_setBrightness(unsigned char c) { |
| unsigned char result; |
| |
| if (c > 15) c = 15; |
| c |= 0xE0; |
| |
| I2C_Master_Send(led_data_p->i2c_address, 1, &c); |
| result = I2C_Get_Status(); |
| while (!result) { |
| result = I2C_Get_Status(); |
| } |
| } |
| |
| void LED_blinkRate(unsigned char c) { |
| unsigned 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_writeDisplay() { |
| unsigned char result; |
| |
| 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); |
| |
| result = I2C_Get_Status(); |
| while (!result) { |
| result = I2C_Get_Status(); |
| } |
| } |
| |
| void LED_clear() { |
| unsigned char c; |
| for (c = 0; c < 17; c++) { |
| led_data_p->display_buffer[c] = 0; |
| } |
| } |
| |
| void LED_drawColon(unsigned char c) { |
| if (c) { |
| led_data_p->display_buffer[5] = 0xFF; |
| } else { |
| led_data_p->display_buffer[5] = 0; |
| } |
| } |
| |
| void LED_writeDigitRaw(unsigned char loc, unsigned char bitmask) { |
| if (loc > 4) return; |
| led_data_p->display_buffer[(loc<<1)+1] = bitmask; |
| } |
| |
| void LED_writeDigitNum(unsigned char loc, unsigned char num, unsigned char dot) { |
| if (loc > 4) return; |
| if (loc > 1) loc++; |
| LED_writeDigitRaw(loc, numbertable[num] | dot << 7); |
| } |
| |
| void LED_writeDigitAlpha(unsigned char loc, unsigned char alpha, unsigned char dot) { |
| if (loc > 4) return; |
| if (loc > 1) loc++; |
| LED_writeDigitRaw(loc, alphatable[alpha] | dot << 7); |
| } |
| |
| void LED_writeNum(unsigned int i) { |
| LED_writeDigitNum(0, (i%10000)/1000, 0); |
| LED_writeDigitNum(1, (i%1000)/100, 0); |
| LED_writeDigitNum(2, (i%100)/10, 0); |
| LED_writeDigitNum(3, i%10, 0); |
| |
| if (i < 10) { |
| LED_writeDigitRaw(0, 0); |
| LED_writeDigitRaw(1, 0); |
| LED_writeDigitRaw(3, 0); |
| } else if (i < 100) { |
| LED_writeDigitRaw(0, 0); |
| LED_writeDigitRaw(1, 0); |
| } else if (i < 1000) { |
| LED_writeDigitRaw(0, 0); |
| } |
| LED_writeDisplay(); |
| } |