+++ /dev/null
-/*
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include <libopencmsis/core_cm3.h>
-#include <libopencm3/cm3/nvic.h>
-#include <libopencm3/cm3/systick.h>
-#include <libopencm3/stm32/rtc.h>
-#include <libopencm3/stm32/usart.h>
-#include <libopencm3/stm32/rcc.h>
-#include <libopencm3/stm32/gpio.h>
-#include <libopencm3/stm32/timer.h>
-
-#define ODR 0x0c
-#define IDR 0x08
-
-
-
-#include "z80-if.h"
-#include "hdrom.h"
-
-#define USART_CONSOLE USART1
-
-int _write(int fd, char *ptr, int len) __attribute__((used));
-
-#define S_10MS_TO (1<<0)
-
-/*
- * LED Connections
- */
-
-#define LED_PORT GPIOC
-#define LED_BLUE_PIN GPIO8
-#define BLUE 8
-#define LED_GREEN_PIN GPIO9
-#define GREEN 9
-
-
-#define LED_BLUE_ON() BBIO_PERIPH(LED_PORT+ODR, BLUE) = 1
-#define LED_BLUE_OFF() BBIO_PERIPH(LED_PORT+ODR, BLUE) = 0
-#define LED_BLUE_TOGGLE() BBIO_PERIPH(LED_PORT+ODR, BLUE) = !BBIO_PERIPH(LED_PORT+ODR, BLUE)
-
-#define LED_GREEN_ON() BBIO_PERIPH(LED_PORT+ODR, GREEN) = 1
-#define LED_GREEN_OFF() BBIO_PERIPH(LED_PORT+ODR, GREEN) = 0
-#define LED_GREEN_TOGGLE() BBIO_PERIPH(LED_PORT+ODR, GREEN) = !BBIO_PERIPH(LED_PORT+ODR, GREEN)
-
-
-/*
- * Button connections
- */
-
-//BBIO_PERIPH(GPIOA+IDR, 0);
-
-#define KEY_PORT GPIOA_IDR
-#define KEY0 GPIO0
-//#define KEY1 GPIO1
-//#define KEY2 GPIO2
-
-#define REPEAT_MASK KEY0 // repeat: key0
-#define REPEAT_START 100 // after 1s
-#define REPEAT_NEXT 20 // every 200ms
-
-
-typedef enum {
- NOTHING, PULSE, BLINK1, BLINK2
-} LED_MODE;
-
-typedef struct {
- uint8_t mode;
- uint8_t ontime, offtime;
-} led_stat_t;
-
-volatile uint8_t led_timer[2];
-led_stat_t led_stat[2];
-
-volatile int timeout_1s;
-volatile uint32_t Stat;
-
-
-/*--------------------------------------------------------------------------*/
-
-
-static void clock_setup(void)
-{
- //rcc_clock_setup_in_hse_8mhz_out_24mhz();
- rcc_clock_setup_in_hsi_out_24mhz();
-
- /* Enable clocks for:
- GPIO port A (for GPIO_USART1_TX and Button)
- GPIO port C (LEDs)
- USART1
- TIM16 (RST-Pin)
- TIM1 (IOCS1)
- TODO: USART1 --> USART_CONSOLE
- */
- rcc_peripheral_enable_clock(&RCC_APB2ENR,
- RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN
- | RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN
- | RCC_APB2ENR_USART1EN | RCC_APB2ENR_AFIOEN
- | RCC_APB2ENR_TIM1EN | RCC_APB2ENR_TIM16EN);
- /* Enable clocks for:
- TIM3
- */
- rcc_peripheral_enable_clock(&RCC_APB1ENR,
- RCC_APB1ENR_TIM3EN);
-
- /* Enable clocks for:
- DMA1
- */
- rcc_peripheral_enable_clock(&RCC_AHBENR,
- RCC_AHBENR_DMA1EN);
-}
-
-static void systick_setup(void)
-{
- /* SysTick interrupt every N clock pulses: set reload to N-1 */
- STK_RVR = 24000000/1000 - 1;
-
- /* Set source to core clock, enable int and start counting. */
- STK_CSR = STK_CSR_CLKSOURCE_AHB | STK_CSR_TICKINT | STK_CSR_ENABLE;
-}
-
-#if 0
-static void nvic_setup(void)
-{
-// nvic_enable_irq(NVIC_RTC_IRQ);
-// nvic_set_priority(NVIC_RTC_IRQ, 1);
-}
-#endif
-
-static void tim3_setup(void)
-{
- TIM3_CR1 = TIM_CR1_CMS_EDGE | TIM_CR1_DIR_UP;
-
- TIM3_CCMR2 = 0
- | TIM_CCMR2_OC4M_FORCE_LOW
- /* | TIM_CCMR2_OC4M_FORCE_HIGH */
- /* | TIM_CCMR2_OC4M_PWM2 */
-
- /* | TIM_CCMR2_OC4PE */
- /* | TIM_CCMR2_OC4FE */
- | TIM_CCMR2_CC4S_OUT;
-
- TIM3_CCER = TIM_CCER_CC4E
- | TIM_CCER_CC4P;
-
- TIM3_ARR = 48; /* default */
- TIM3_CCR4 = 1; /* */
-}
-
-static void gpio_setup(void)
-{
-
- /* Disable JTAG-DP, but leave SW-DP Enabled. (free PA15, PB3, PB4)
- Remap SPI1 to PB3, PB4, PB5 and PA15.
- Remap TIM3 (CH1/PC6, CH2/PC7, CH3/PC8, CH4/PC9)
- Port D0/Port D1 mapping on OSC_IN/OSC_OUT
- */
- gpio_primary_remap(AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON,
- AFIO_MAPR_SPI1_REMAP
- | AFIO_MAPR_TIM3_REMAP_FULL_REMAP
- | AFIO_MAPR_PD01_REMAP);
-
- /* LEDs and User Button. */
- gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
- GPIO_CNF_OUTPUT_PUSHPULL, LED_BLUE_PIN);
- gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_10_MHZ,
- GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, LED_GREEN_PIN);
- gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
- GPIO_CNF_INPUT_FLOAT, GPIO0);
-}
-
-
-static void usart_setup(void)
-{
- /* Setup GPIO pin GPIO_USART1_TX/LED_GREEN_PIN on GPIO port A for transmit. */
- /* TODO: USART1 --> USART_CONSOLE */
-
- gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX);
-
- /* Setup UART parameters. */
-// usart_set_baudrate(USART_CONSOLE, 38400);
- usart_set_baudrate(USART_CONSOLE, 115200);
- usart_set_databits(USART_CONSOLE, 8);
- usart_set_stopbits(USART_CONSOLE, USART_STOPBITS_1);
- usart_set_mode(USART_CONSOLE, USART_MODE_TX_RX);
- usart_set_parity(USART_CONSOLE, USART_PARITY_NONE);
- usart_set_flow_control(USART_CONSOLE, USART_FLOWCONTROL_NONE);
-
- /* Finally enable the USART. */
- usart_enable(USART_CONSOLE);
-}
-
-/*--------------------------------------------------------------------------*/
-
-/**
- * Use USART_CONSOLE as a console.
- * This is a syscall for newlib
- * @param fd
- * @param ptr
- * @param len
- * @return
- */
-int _write(int fd, char *ptr, int len)
-{
- int i;
-
- if (fd == STDOUT_FILENO || fd == STDERR_FILENO) {
- for (i = 0; i < len; i++) {
- if (ptr[i] == '\n') {
- usart_send_blocking(USART_CONSOLE, '\r');
- }
- usart_send_blocking(USART_CONSOLE, ptr[i]);
- }
- return i;
- }
- errno = EIO;
- return -1;
-}
-
-
-/*--------------------------------------------------------------------------*/
-
-void delay_systicks(int ticks)
-{
- int start, stop, now;
-
- start = STK_CVR;
- stop = start - ticks;
- if (stop < 0) {
- stop += STK_RVR;
- do {
- now = STK_CVR;
- } while ((now > stop) || (now <= start));
- } else {
- do {
- now = STK_CVR;
- } while ((now > stop) && (now <= start));
- }
-}
-
-
-/*--------------------------------------------------------------------------*/
-
-static void led_toggle(uint8_t lednr) {
- if (lednr == 0)
- LED_BLUE_TOGGLE();
- else if (lednr == 1)
- LED_GREEN_TOGGLE();
-}
-
-static void led_on(uint8_t lednr) {
- if (lednr == 0)
- LED_BLUE_ON();
- else if (lednr == 1)
- LED_GREEN_ON();
-}
-
-static void led_off(uint8_t lednr) {
- if (lednr == 0)
- LED_BLUE_OFF();
- else if (lednr == 1)
- LED_GREEN_OFF();
-}
-
-static uint8_t led_is_on(uint8_t lednr) {
- if (lednr == 0)
- return BBIO_PERIPH(LED_PORT+ODR, BLUE);
- else if (lednr == 1)
- return BBIO_PERIPH(LED_PORT+ODR, GREEN);
- else
- return 0;
-}
-
-static void ledset(uint8_t lednr, uint8_t what, uint8_t len) {
-
- led_stat[lednr].mode = what;
- switch (what) {
- case PULSE:
- led_stat[lednr].ontime = len;
- led_stat[lednr].offtime = 0;
- led_timer[lednr] = len;
- led_on(lednr);
- break;
- case BLINK1:
- case BLINK2:
- if (what == BLINK1)
- led_stat[lednr].offtime = 100 - len;
- else
- led_stat[lednr].offtime = 200 - len;
- led_stat[lednr].ontime = len;
- led_timer[lednr] = len;
- led_on(lednr);
- break;
- default:
- break;
- }
-}
-
-/*--------------------------------------------------------------------------*/
-
-static volatile uint16_t key_state,
- key_press, // key press detect
- key_rpt; // key long press and repeat
-
-
-static uint16_t get_key_press(uint16_t key_mask) {
- __disable_irq();
- // read and clear atomic !
- key_mask &= key_press; // read key(s)
- key_press ^= key_mask; // clear key(s)
- __enable_irq();
- return key_mask;
-}
-
-static uint16_t get_key_rpt(uint16_t key_mask) {
- __disable_irq();
- // read and clear atomic !
- key_mask &= key_rpt; // read key(s)
- key_rpt ^= key_mask; // clear key(s)
- __enable_irq();
- return key_mask;
-}
-
-static uint16_t get_key_short(uint16_t key_mask) {
- __disable_irq();
- // read key state and key press atomic !
- return get_key_press(key_state & key_mask);
-}
-
-/*
-static uint16_t get_key_long(uint16_t key_mask) {
- return get_key_press(get_key_rpt(key_mask));
-}
-*/
-
-static void key_timerproc() {
- static uint16_t key_in_last, rpt;
- uint16_t key_in, c;
-
- key_in = KEY_PORT;
-
- c = key_in_last & key_in & ~key_state;
-
-// key_state = key_state & key_in_last | (key_state | key_in_last) & key_in;
-// key_state = key_state & key_in | (key_state | key_in) & key_in_last;
-
- key_state = c | ((key_in_last | key_in) & key_state);
-
-// key_state = (key_state&key_in_last) | (key_state&key_in) | (key_in_last&key_in);
-
- key_press |= c;
-
- key_in_last = key_in;
-
-
- if ((key_state & REPEAT_MASK) == 0) // check repeat function
- rpt = REPEAT_START;
- if (--rpt == 0) {
- rpt = REPEAT_NEXT; // repeat delay
- key_rpt |= key_state & REPEAT_MASK;
- }
-
-
-#if 0
-
-static char ds[30];
-int dsi = 0;
-
-ds[dsi++] = key_state & 1 ? '1' : '0';
-ds[dsi++] = key_in_last & 1 ? '1' : '0';
-ds[dsi++] = key_in & 1 ? '1' : '0';
-ds[dsi++] = ' ';
-
-//ds[dsi++] = key_state & 1 ? '1' : '0';
-//ds[dsi++] = key_in_last & 1 ? '1' : '0';
-
-//ds[dsi++] = ' ';
-//ds[dsi++] = ' ';
-ds[dsi++] = 0;
-puts(ds);
-#endif
-
-}
-
-/*--------------------------------------------------------------------------*/
-
-void sys_tick_handler(void)
-{
- static int tick_10ms = 0;
- static int count_ms = 0;
-
- int i;
-
- ++tick_10ms;
- if (tick_10ms == 10)
- {
- Stat |= S_10MS_TO;
-
- tick_10ms = 0;
-
- i = led_timer[0];
- if (i)
- led_timer[0] = i - 1;
- i = led_timer[1];
- if (i)
- led_timer[1] = i - 1;
-
- key_timerproc();
-
- /* Drive timer procedure of low level disk I/O module */
- //disk_timerproc();
- }
-
- count_ms++;
- if (count_ms == 1000) {
- count_ms = 0;
-
- i = timeout_1s;
- if (i)
- timeout_1s = i - 1;
- }
-}
-
-void rtc_isr(void)
-{
- /* The interrupt flag isn't cleared by hardware, we have to do it. */
- rtc_clear_flag(RTC_SEC);
-
-}
-
-/*--------------------------------------------------------------------------*/
-
-void tim3_set(int mode)
-{
- uint16_t cc_mode;
-
- cc_mode = TIM_CCMR2_CC4S_OUT;
-
- TIM3_CR1 = TIM_CR1_CMS_EDGE | TIM_CR1_DIR_UP /*| TIM_CR1_OPM */ ;
-
- if (mode < 0)
- cc_mode |= TIM_CCMR2_OC4M_FORCE_LOW;
- else if (mode == 0)
- cc_mode |= TIM_CCMR2_OC4M_FORCE_HIGH;
- else {
- TIM3_ARR = mode;
- TIM3_CCR4 = mode/2;
- cc_mode |= TIM_CCMR2_OC4M_PWM2;
- }
-
- TIM3_CCMR2 = cc_mode;
-
- if (mode > 0)
- TIM3_CR1 |= TIM_CR1_CEN;
-}
-
-/*--------------------------------------------------------------------------*/
-
-static uint32_t z80_sram_cmp(uint32_t addr, int length, uint8_t wval, int inc)
-{
- uint8_t rval;
- int errors = 0;
-
- printf("SRAM: Check %#.5x byte... ", length); //fflush(stdout);
- while (length--) {
- if ((rval = z80_read(addr)) != wval) {
- if (errors == 0) {
- printf("\nSRAM: Address W R\n" \
- " -------------\n");
-// 12345 00 11
- }
- printf(" %.5lx %.2x %.2x\n", addr, wval, rval);
-
- if (++errors > 16 )
- break;
- }
- addr++;
- wval += inc;
- }
- printf("Done.\n");
-
- return addr;
-}
-
-#if 0
-static void z80_sram_fill(uint32_t addr, int length, uint8_t startval, int inc)
-{
- printf("SRAM: Write %#.5x byte... ", length); //fflush(stdout);
- while (length--) {
- z80_write(addr, startval);
- ++addr;
- startval += inc;
- }
- printf("Done.\n");
-}
-
-
-void z80_sram_fill_string(uint32_t addr, int length, const char *text)
-{
- char c;
- const char *p = text;
-
- while (length--) {
- z80_write(addr++, c = *p++);
- if (c == 0)
- p = text;
- }
-}
-
-
-uint32_t z80_sram_cmp_string(uint32_t addr, int length, const char *text)
-{
- char c;
- const char *p = text;
-
- while (length--) {
- c = *p++;
- if (z80_read(addr) != c)
- break;
- ++addr;
- if (c == 0)
- p = text;
- }
- return addr;
-}
-
-const char * const qbfox = "Zhe quick brown fox jumps over the lazy dog!";
-const char * const qbcat = "Zhe quick brown fox jumps over the lazy cat!";
-
-#endif
-
-uint8_t z80_get_byte(uint32_t adr)
-{
- uint8_t data;
-
- z80_request_bus();
- data = z80_read(adr),
- z80_release_bus();
-
- return data;
-}
-
-
-/*--------------------------------------------------------------------------*/
-
-static void do_10ms(void)
-{
- for (uint_fast8_t i = 0; i < 2; i++) {
- switch (led_stat[i].mode) {
- case PULSE:
- if (led_timer[i] == 0) {
- led_off(i);
- led_stat[i].mode = NOTHING;
- }
- break;
- case BLINK1:
- case BLINK2:
- if (led_timer[i] == 0) {
- if (led_is_on(i))
- led_timer[i] = led_stat[i].offtime;
- else
- led_timer[i] = led_stat[i].ontime;
- led_toggle(i);
- }
- break;
- default:
- break;
- }
- }
-}
-
-void wait_for_z80_init_done(void)
-{
- uint8_t buf, out_i, in_i, mask;
- int to;
-
- timeout_1s = 10;
- to = 0;
- while (timeout_1s) {
- if (to != timeout_1s) {
- buf = z80_get_byte(tx_fifo - 0);
- out_i = z80_get_byte(tx_fifo - 1);
- in_i = z80_get_byte(tx_fifo - 2);
- mask = z80_get_byte(tx_fifo - 3);
- printf(" %.2x %.2x %.2x %.2x\n", buf, out_i, in_i, mask);
- to = timeout_1s;
-
- if ((out_i == 0) && (mask == 0x7f))
- timeout_1s = 0;
- }
- }
-}
-
-/*--------------------------------------------------------------------------*/
-
-int main(void)
-{
- //uint32_t led_state = LED_BLUE_PIN;
- //uint32_t rc;
- //uint8_t startval = 0;
- //int count;
- int stat, ch;
- uint8_t c;
-
- clock_setup();
- gpio_setup();
- tim3_setup();
- setvbuf(stdout, NULL, _IONBF, 0);
- usart_setup();
- printf("\n(STM32F100+HD64180)_stamp Tester\n");
-
- z80_setup_io_infifo();
- z80_setup_bus();
- printf("z80_setup_bus done.\n");
-
- /*
- * If the RTC is pre-configured just allow access, don't reconfigure.
- * Otherwise enable it with the LSE as clock source and 0x7fff as
- * prescale value.
- */
- rtc_auto_awake(LSE, 0x7fff);
-
- systick_setup();
- ///* Setup the RTC interrupt. */
- //nvic_setup();
-
- /* Enable the RTC interrupt to occur off the SEC flag. */
- //rtc_interrupt_enable(RTC_SEC);
-
- printf("get bus...");
- z80_busreq(LOW);
- z80_reset(HIGH);
- z80_request_bus();
- printf(" got it!\n");
-
- z80_memset(0, 0x76, 0x80000);
- //z80_sram_fill(0, 512 * 1024, 0x76, 0);
- z80_sram_cmp(0, 512 * 1024, 0x76, 0);
-
- z80_write_block((unsigned char *) hdrom, 0, hdrom_length);
- z80_reset(LOW);
- printf("bus released!\n");
- z80_release_bus();
- z80_reset(HIGH);
- printf(" reset released!\n");
-
- wait_for_z80_init_done();
- z80_memfifo_init();
-
- ledset(0, BLINK1, 50);
-
- while (1) {
-// static int tickstat = 0;
-
- if (Stat & S_10MS_TO) {
- Stat &= ~S_10MS_TO;
- do_10ms();
- }
-
-
-// if (get_key_long(KEY0))
-// ledset(1, PULSE, 100);
-
- if (get_key_short(KEY0)) {
- z80_reset_pulse();
- wait_for_z80_init_done();
- z80_memfifo_init();
- }
-
-
-/*
- switch (tickstat) {
-
- case 0:
- if (BBIO_PERIPH(GPIOA+IDR, 0))
- {
- tickstat = 1;
-
- LED_GREEN_ON();
- LED_GREEN_OFF();
- LED_GREEN_ON();
- delay_systicks(12);
- LED_GREEN_OFF();
- }
- break;
- default:
- if (!BBIO_PERIPH(GPIOA+IDR, 0))
- tickstat = 0;
- }
-*/
-
- //BBIO_PERIPH(LED_PORT+0x0C, 9) = BBIO_PERIPH(GPIOA+0x08, 0);
-
- //BBIO_PERIPH(LED_PORT+0x0C, 9) = !z80_stat_halt();
-
- //BBIO_PERIPH(LED_PORT+0x0C, 9) = (~key_state & KEY0) != 0;
-
-
-/*
- stat = z80_fifo_is_not_full(rx_fifo);
- if(stat) {
- z80_fifo_putc(rx_fifo, 'y');
- if (++count == 154) {
- putchar('\n');
- putchar('\r');
- count = 0;
- }
-
- }
-*/
-
- stat = usart_get_flag(USART_CONSOLE, USART_SR_RXNE);
- if (stat) {
- c = usart_recv(USART_CONSOLE) & 0xff;
- switch (c) {
- case 'H':
- tim3_set(-1);
- break;
- case 'L':
- tim3_set(0);
- break;
- case 'P':
- tim3_set(24000000/1000000 * 5); /* 5 us */
- break;
- default:
- z80_memfifo_putc(fifo_out, c);
- }
- }
-
- if (timeout_1s == 0) {
-
- while (!z80_memfifo_is_empty(fifo_in)) {
-// LED_GREEN_ON();
- c = z80_memfifo_getc(fifo_in);
- putchar(c);
-// LED_GREEN_OFF();
- }
-
- timeout_1s = 1;
- }
-
- while ((ch = z80_io_infifo_getc()) >= 0) {
- static int linepos;
-
- if (linepos == 0)
- printf("\n");
- printf(" 0x%.2X ", ch);
- linepos = (linepos + 1) % 16;
- }
- }
-
- return 0;
-}
-
-#if 0
-
-static char ds[30];
-int dsi = 0;
-
-ds[dsi++] = key_state1 & 1 ? '1' : '0';
-ds[dsi++] = key_in_last & 1 ? '1' : '0';
-ds[dsi++] = key_in & 1 ? '1' : '0';
-ds[dsi++] = ' ';
-ds[dsi++] = key_state1 & 1 ? '1' : '0';
-ds[dsi++] = key_in_last & 1 ? '1' : '0';
-
-ds[dsi++] = ' ';
-ds[dsi++] = ' ';
-ds[dsi++] = key_state & 1 ? '1' : '0';
-ds[dsi++] = ct1 & 1 ? '0' : '1';
-ds[dsi++] = ct0 & 1 ? '0' : '1';
-ds[dsi++] = ' ';
-ds[dsi++] = key_state & 1 ? '1' : '0';
-//ds[dsi++] = '\r';
-//ds[dsi++] = '\n';
-ds[dsi++] = 0;
-puts(ds);
-#endif
projects / z180-stamp.git / blobdiff