177 lines
4.3 KiB
C
177 lines
4.3 KiB
C
#include "ch.h"
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#include "hal.h"
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#include "dfi.h"
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#define FET_COUNT 8
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#define BYTE_PER_FET 6
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volatile uint8_t data[FET_COUNT][BYTE_PER_FET];
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static virtual_timer_t mosfet_timer;
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// prototypes
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void initializeSRData(void);
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static void refreshDisplay(void *arg);
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void shiftOut(uint8_t);
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THD_WORKING_AREA(wa_dfiFunc, DFI_THREAD_STACK_SIZE);
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THD_FUNCTION(dfiFunc, p) {
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(void)p;
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chRegSetThreadName("dfi");
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static systime_t last_time_simul = 0;
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static uint8_t counterFet = 0;
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static uint8_t counterDigit = 0;
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static uint8_t counterBit = 0;
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chVTObjectInit(&mosfet_timer);
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chVTSet(&mosfet_timer, MS2ST(10), refreshDisplay, NULL);
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while(true) {
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if(ST2MS(chVTTimeElapsedSinceX(last_time_simul)) > 100) {
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for(int fet=0; fet<FET_COUNT; fet++) {
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for(int digit=0; digit<BYTE_PER_FET; digit++) {
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if(fet == counterFet && digit == counterDigit) {
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data[fet][digit] = 0xff; //(1 << counterBit);
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} else {
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data[fet][digit] = 0xff;
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}
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}
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}
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counterBit++;
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if(counterBit > 7) {
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counterBit = 0;
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counterDigit++;
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if(counterDigit > 5) {
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counterFet++;
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counterDigit = 0;
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counterFet %= FET_COUNT;
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}
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}
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last_time_simul = chVTGetSystemTimeX();
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palTogglePad(GPIOC, GPIOC_LED);
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}
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}
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}
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void initializeSRData() {
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palSetPad(GPIOE, GPIOE_PIN1); //Tells all SRs that uController is sending data
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for(int digit = 0; digit < BYTE_PER_FET; digit++) {
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shiftOut(0);
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}
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for(int fet=0; fet<FET_COUNT; fet++) {
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for(int digit=0; digit<BYTE_PER_FET; digit++) {
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data[fet][digit] = 0xff;
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}
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}
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palClearPad(GPIOE, GPIOE_PIN1); //Tells all SRs that uController is done sending data
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}
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static void refreshDisplay(void *arg) {
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(void)arg;
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chSysLockFromISR();
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static int fet = 0;
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fet++;
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fet %= FET_COUNT;
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// switch fets
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for(int digit = 0; digit < BYTE_PER_FET; digit++) {
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shiftOut(data[fet][digit]);
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}
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palClearPort(GPIOD, 0xff00);
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palSetPad(GPIOE, GPIOE_PIN1); // latch
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for (int w = 0; w < 1000; w++);
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palClearPad(GPIOE, GPIOE_PIN1); // latch
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// switch fets
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//palSetPort(GPIOD, (1 << (fet+8)));
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palWritePad(GPIOD, GPIOD_PIN8, (fet == 0) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN9, (fet == 1) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN10, (fet == 2) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN11, (fet == 3) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN12, (fet == 4) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN13, (fet == 5) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN14, (fet == 6) ? 1 : 0);
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palWritePad(GPIOD, GPIOD_PIN15, (fet == 7) ? 1 : 0);
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//palClearPort(GPIOD, 0xff00);
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chVTSetI(&mosfet_timer, MS2ST(2), refreshDisplay, NULL);
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chSysUnlockFromISR();
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}
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void shiftOut(uint8_t val) {
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uint8_t i;
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uint8_t bitbit = false;
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for (i = 0; i < 8; i++) {
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//bitbit = !!((val & (1 << i)));
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bitbit = (val & (1 << i)) >> i;
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/*
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if(bitbit == 1) {
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palSetPad(GPIOE, GPIOE_PIN2);
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} else {
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palClearPad(GPIOE, GPIOE_PIN2);
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}*/
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palWritePad(GPIOE, GPIOE_PIN2, bitbit);
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palSetPad(GPIOE, GPIOE_PIN0); //clock
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for (int w = 0; w < 1000; w++);
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palClearPad(GPIOE, GPIOE_PIN0); //clock
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for (int w = 0; w < 1000; w++);
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}
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}
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void init_hw() {
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initializeSRData();
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palSetGroupMode(GPIOD, 0xff00, 0, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
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palSetGroupMode(GPIOE, 0x00ff, 0, PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
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/*
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// enable clock
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE, ENABLE);
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = GPIOD_PIN8 | GPIOD_PIN9 | GPIOD_PIN10 |
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GPIOD_PIN11 | GPIOD_PIN12 | GPIOD_PIN13 | GPIOD_PIN14 | GPIOD_PIN15;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIOE_PIN0 | GPIOE_PIN1 | GPIOE_PIN2 |
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GPIOE_PIN3 | GPIOE_PIN4 | GPIOE_PIN5 | GPIOE_PIN6 | GPIOE_PIN7;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_Init(GPIOE, &GPIO_InitStructure);
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*/
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}
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