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#include "core/irq.h"
#include "core/gpio.h"
#include "core/nvic.h"
#include "arch.h"
#include "delay.h"
#define IRQ_RESERVED(n)
#define IRQ(name, uname_, n) \
void WEAK name () { \
unhandled_isr(n); \
}
#include "core/isrs.inc"
#undef IRQ_RESERVED
#undef IRQ
void isr_simple_pin_on()
{
__IO gpio_port_t* port_b = enable_gpio(GPIO_PORT_B);
gpio_output_pin_t pin3 = set_gpio_pin_output(port_b, PIN_3);
pin_on(pin3);
}
#define IRQ_RESERVED(n) 0,
#define IRQ(name, uname_, n) name,
const void* vectors[] __attribute__((section(".vectors"))) = {
(void*)0x2000c000, /* Top of stack at top of sram1. 48k */
#include "core/isrs.inc"
};
#undef IRQ_RESERVED
#undef IRQ
/* Encodes the provided number as a series of flashes on the on-board
* LED. The flashes follow as such:
*
* Before the bits of the code are flashed, a rapid succession of 20 flashes
* followed by a pause will occur indicating that the next 8 flashes indicate
* the bits of the provided code.
*
* Eoch of the next eight flashes indicate either a 1 or 0 depending on the
* length of flash. The first flash is the least-significant bit, the next the
* second least, the third third least, etc.
*
* - A quick flash followed by a long pause indicates a 0 bit.
* - A "long" flash followed by a equally long pause indicates a 1 bit.
*/
void unhandled_isr(uint8_t number)
{
__IO gpio_port_t* port_b = enable_gpio(GPIO_PORT_B);
gpio_output_pin_t pin3 = set_gpio_pin_output(port_b, PIN_3);
for (;;) {
for (int i = 0; i < 20; ++ i) {
pin_on(pin3);
delay(1000000);
pin_off(pin3);
delay(1000000);
}
delay(50000000);
int n = number;
for (int i = 0; i < 8; ++ i) {
if (n & 1) {
// LSB is a 1
pin_on(pin3);
delay(15000000);
pin_off(pin3);
delay(15000000);
} else {
// LSB is a 0
pin_on(pin3);
delay(1000000);
pin_off(pin3);
delay(29000000);
}
n >>= 1;
}
}
}
void enable_interrupts(interrupt_set_t* interrupts)
{
for (int i = 0; i < sizeof(NVIC.ise_r) / sizeof(uint32_t); ++ i)
NVIC.ise_r[i] = interrupts->irqs[i];
}
void disable_interrupts(interrupt_set_t* interrupts)
{
for (int i = 0; i < sizeof(NVIC.ise_r) / sizeof(uint32_t); ++ i)
NVIC.ice_r[i] = interrupts->irqs[i];
}
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