int main(void)
{
__stack_chk_guard = random32();
setup();
memory_protect();
oledInit();
// at least one button is unpressed
uint16_t state = gpio_port_read(BTN_PORT);
if ((state & BTN_PIN_YES) == BTN_PIN_YES || (state & BTN_PIN_NO) == BTN_PIN_NO) {
check_firmware_sanity();
oledClear();
oledDrawBitmap(40, 0, &bmp_logo64_empty);
oledRefresh();
uint8_t hash[32];
if (!signatures_ok(hash)) {
show_unofficial_warning(hash);
}
load_app();
}
bootloader_loop();
return 0;
}
void tim3_isr(void) {
TIM_SR(TIM3) &= ~TIM_SR_UIF;
if ( 1||vblank ) {
uint16_t a = gpio_port_read ( GPIOB );
if ( a = 37 ) {
gpio_toggle_blinkenlight();
__asm__("nop");
}
}
}
static uint8_t clock_in(void)
{
uint8_t i,out;
out = 0;
for (i = 0; i < 8; i++)
{
gpio_set(R_CLK_PORT, R_CLK_PIN);
out = out << 1;
if (gpio_port_read(R_MI_PORT)&R_MI_PIN)
out |= 0x1;
gpio_clear(R_CLK_PORT, R_CLK_PIN);
}
return out;
}
unsigned char lcdStatus() {
unsigned char rv;
int i;
gpio_set(LCD_RW_PORT, LCD_RW_PIN);
gpio_clear(LCD_DC_PORT, LCD_DC_PIN);
gpio_clear(LCD_CS_PORT, LCD_CS_PIN);
gpio_set(LCD_E_PORT, LCD_E_PIN);
for(i=0;i<100;i++) {__asm__("nop\n\t");}
rv = gpio_port_read(LCD_DATA_PORT) & LCD_DATA_MASK;
gpio_clear(LCD_E_PORT, LCD_E_PIN);
gpio_set(LCD_CS_PORT, LCD_CS_PIN);
return rv;
}
inline void lcd_write_byte(uint8_t b, bool rs_data)
{
//place data
gpio_port_write(GPIOD, (gpio_port_read(GPIOD) & ~0xFF) | (b & 0xFF));
//R/W = write
gpio_clear(GPIOE, GPIO1);
// rs_data = true --> R/S = 1, else 0
if (rs_data) {
gpio_set(GPIOE, GPIO2);
} else {
gpio_clear(GPIOE, GPIO2);
}
//set E=true
gpio_set(GPIOE, GPIO0);
//wait 500ns or more before falling edge of E
delay_us(1);
gpio_clear(GPIOE, GPIO0);
}
u32 ScanButtons()
{
u8 idx = 0;
u32 result = 0;
const u16 *c, *r;
gpio_set(COL_PORT, COL_PORT_MASK);
for(c = columns; *c != 0xffff; c++) {
gpio_clear(COL_PORT, *c);
u16 but = gpio_port_read(ROW_PORT);
gpio_set(COL_PORT, *c);
for(r = rows; *r != 0xffff; r++) {
if(! (but & *r)) {
result |= 1 << (buttonmap[idx] - 1);
}
idx++;
}
}
return result;
}
void lcd_poll_busy(void)
{
delay_us(40);
// set DB7-0 as input temporarily
gpio_mode_setup(GPIOD, GPIO_MODE_INPUT, GPIO_PUPD_NONE, 0xFF);
// set R/W to "read"
gpio_set(GPIOE, GPIO1);
// set RS to "command"
gpio_clear(GPIOE, GPIO2);
uint8_t res = 0;
do {
gpio_set(GPIOE, GPIO0); // set enable
res = gpio_port_read(GPIOD) & (1 << 7); // read command register
delay_us(40); // wait between reads
gpio_clear(GPIOE, GPIO0); // clear enable
} while (res != 0);
// restore DB7-0 as output
gpio_mode_setup(GPIOD, GPIO_MODE_INPUT, GPIO_PUPD_NONE, 0xFF);
// set R/W to "write"
gpio_clear(GPIOE, GPIO1);
}
int main(void)
{
#ifndef APPVER
setup();
#endif
__stack_chk_guard = random32(); // this supports compiler provided unpredictable stack protection checks
#ifndef APPVER
memory_protect();
oledInit();
#endif
#ifndef APPVER
// at least one button is unpressed
uint16_t state = gpio_port_read(BTN_PORT);
int unpressed = ((state & BTN_PIN_YES) == BTN_PIN_YES || (state & BTN_PIN_NO) == BTN_PIN_NO);
if (firmware_present() && unpressed) {
oledClear();
oledDrawBitmap(40, 0, &bmp_logo64_empty);
oledRefresh();
uint8_t hash[32];
int signed_firmware = signatures_ok(hash);
if (SIG_OK != signed_firmware) {
show_unofficial_warning(hash);
timer_init();
}
load_app(signed_firmware);
}
#endif
bootloader_loop();
return 0;
}
u32 gpio_get(u32 gpioport, u32 gpios)
{
return gpio_port_read(gpioport) & gpios;
}
void sys_tick_handler(void) {
static uint8_t data[5] = { 0, 0, 0, 0, 0 };
/* We call this handler every 1ms so every 1ms = 0.001s
* resulting in 1Hz message rate.
*/
/* Transmit CAN frame. */
counter++;
if (gpio_port_read(GPIO_PORT_B_BASE) && (1 << 6)) {
/* if status changed send command */
if (status == 1) {
data[4] = 0;
can_transmit(CAN1, 0x0000fffe, true, false, 5, data);
}
status = 0;
} else if (!(gpio_port_read(GPIO_PORT_B_BASE) && (1 << 7))) {
/* if status changed send command */
if (status == 0) {
data[4] = 1;
can_transmit(CAN1, 0x0000fffe, true, false, 5, data);
}
status = 1;
}
#if 1
switch (counter) {
case 125:
gpio_clear(GPIOB, GPIO3);
break;
case 250:
gpio_set(GPIOB, GPIO3);
break;
case 375:
gpio_clear(GPIOB, GPIO3);
break;
case 500:
gpio_set(GPIOB, GPIO4);
break;
case 1000:
counter = 0;
break;
default:
break;
}
#else
if (counter == 1000) {
counter = 0;
if (status) {
data[4] = 1;
} else {
data[4] = 0;
}
if (can_transmit(CAN1, 0x0000fffe, /* (EX/ST)ID: CAN ID */
true, /* IDE: CAN ID extended? */
false, /* RTR: Request transmit? */
5, /* DLC: Data length */
data) == -1) {
gpio_set(GPIOC, GPIO13); /* LED green off */
}
}
#endif
}
uint16_t gpio_get(uint32_t gpioport, uint16_t gpios)
{
return gpio_port_read(gpioport) & gpios;
}