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#include <stm32l476xx.h>
#include <clock.h>
#include <heap.h>
#include <task.h>
#include <gpio.h>
#include <lcd.h>
#include <initrd.h>
#include <serial.h>
#include <parser.h>
/**
* Accomplishments:
* - GPIO in/out
* - got to 80MHz clock
* - basic heap
* - multitask, can exit
* - gpio lib
* - lcd support
* - initrd support
* - lua? - no, something better, smaller
* - serial IO
*/
void pulse(uint8_t byte);
void kmain(void);
int main(void)
{
asm("cpsid i");
// prepare flash latency for 40MHz operation
FLASH->ACR &= ~(FLASH_ACR_LATENCY);
FLASH->ACR |= FLASH_ACR_LATENCY_4WS;
//MPU->CTRL |= MPU_CTRL_ENABLE_Msk | MPU_CTRL_PRIVDEFENA_Msk;
clock_init();
gpio_init();
gpio_mode(GPIOA, 5, OUTPUT);
serial_init();
// enable FPU
SCB->CPACR |= (0xF << 20);
task_init(kmain);
while (1);
}
int script_puts(interpreter *it)
{
char *s = igetarg_string(it, 0);
asm("mov r0, %0; svc 2" :: "r" (s));
return 0;
}
void task_interpreter(void)
{
interpreter it;
iinit(&it);
inew_cfunc(&it, "print", script_puts);
while (1);
}
void kmain(void)
{
asm("cpsie i");
task_start(lcd_handler, 128);
delay(200);
task_start(task_interpreter, 2048);
//char *s = initrd_getfile("test.txt");
while (1) {
gpio_dout(GPIOA, 5, 1);
delay(500);
gpio_dout(GPIOA, 5, 0);
delay(500);
}
}
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