| 0,0 → 1,159 |
|---|
| #include "maindefs.h" |
| #include "led_driver.h" |
| #include "delays.h" |
| #include <spi.h> |
| |
| unsigned int led_last_value; |
| |
| #ifdef _SPI2_V1 |
| /* Output Pins: |
| * RA0 - LED Display Latch Enable (PPS) |
| * RA1 - LED Display CLK (PPS) |
| * RA2 - LED Display DIN (PPS) |
| * RA3 - LED Display Output Enable (PPS) |
| */ |
| #endif |
| |
| #ifdef _SPI2_V2 |
| /* Output Pins: |
| * RA0 - LED Display CLK (PPS) |
| * RA1 - LED Display DIN (PPS) |
| * RA2 - LED Display Latch Enable (PPS) |
| * RA3 - LED Display Output Enable (PPS) |
| */ |
| #endif |
| |
| void led_driver_init() { |
| #ifdef _SPI2_V1 |
| TRISAbits.TRISA0 = 0; // LE |
| TRISAbits.TRISA1 = 0; // CLK |
| TRISAbits.TRISA2 = 0; // DAT |
| TRISAbits.TRISA3 = 0; // OE |
| |
| LATAbits.LATA0 = 0; // LE |
| LATAbits.LATA1 = 0; // CLK |
| LATAbits.LATA2 = 0; // DAT |
| LATAbits.LATA3 = 0; // OE |
| #endif |
| |
| #ifdef _SPI2_V2 |
| RPOR0 = 10; // CLK |
| RPOR1 = 9; // DATA |
| OpenSPI2(SPI_FOSC_4, MODE_00, SMPMID); |
| #endif |
| |
| led_last_value = 0; |
| led_driver_data(0); |
| led_driver_data(0); |
| } |
| |
| #ifdef _SPI2_V1 |
| void led_driver_clock() { |
| LATAbits.LATA1 = 0x1; // Simple clock output toggle |
| Nop(); |
| LATAbits.LATA1 = 0x0; |
| Nop(); |
| } |
| #endif |
| |
| void led_driver_data(char val) { |
| #ifdef _SPI2_V1 |
| int i; |
| LATAbits.LATA0 = 0x0; // Set latch low to pause display |
| for (i = 0; i < 8; i++) { |
| LATAbits.LATA2 = val & 0x1; // Shift out bits |
| led_driver_clock(); |
| val >>= 1; |
| } |
| LATAbits.LATA0 = 0x1; // Set latch high to resume display |
| #endif |
| |
| #ifdef _SPI2_V2 |
| LATAbits.LATA0 = 0x0; |
| WriteSPI2(val); |
| LATAbits.LATA0 = 0x1; |
| #endif |
| } |
| |
| void led_driver_num(unsigned char data) { |
| unsigned char tmp = 0; |
| led_last_value = 0; |
| |
| // Determine right character (1s digit) |
| tmp = data % 10; |
| switch (tmp) { |
| case 0: |
| led_last_value |= 0x0D70; |
| break; |
| case 1: |
| led_last_value |= 0x0140; |
| break; |
| case 2: |
| led_last_value |= 0x0E60; |
| break; |
| case 3: |
| led_last_value |= 0x0760; |
| break; |
| case 4: |
| led_last_value |= 0x0350; |
| break; |
| case 5: |
| led_last_value |= 0x0730; |
| break; |
| case 6: |
| led_last_value |= 0x0F30; |
| break; |
| case 7: |
| led_last_value |= 0x0170; |
| break; |
| case 8: |
| led_last_value |= 0x0F70; |
| break; |
| case 9: |
| led_last_value |= 0x0770; |
| break; |
| } |
| |
| // Determine left character (10s digit) |
| tmp = data / 10; |
| switch (tmp) { |
| case 0: |
| led_last_value |= 0xE00D; |
| break; |
| case 1: |
| led_last_value |= 0x2008; |
| break; |
| case 2: |
| led_last_value |= 0xC00E; |
| break; |
| case 3: |
| led_last_value |= 0x600E; |
| break; |
| case 4: |
| led_last_value |= 0x200B; |
| break; |
| case 5: |
| led_last_value |= 0x6007; |
| break; |
| case 6: |
| led_last_value |= 0xE007; |
| break; |
| case 7: |
| led_last_value |= 0x200D; |
| break; |
| case 8: |
| led_last_value |= 0xE00F; |
| break; |
| case 9: |
| led_last_value |= 0x600F; |
| break; |
| } |
| |
| led_driver_data(led_last_value & 0x00FF); |
| led_driver_data((led_last_value & 0xFF00) >> 8); |
| } |
| |
| void led_driver_show_last() { |
| led_driver_data(led_last_value & 0x00FF); |
| led_driver_data((led_last_value & 0xFF00) >> 8); |
| } |