boochow

#define IOREG(X)  (*(volatile uint32_t *) (X))
#define MAILBOX0_FIFO   IOREG(0x2000B880)
#define MAILBOX0_POLL   IOREG(0x2000B890)
#define MAILBOX0_SENDER IOREG(0x2000B894)
#define MAILBOX0_STATUS IOREG(0x2000B898)
#define MAILBOX0_CONFIG IOREG(0x2000B89C)
#define MAILBOX1_FIFO   IOREG(0x2000B8A0)
#define MAILBOX1_POLL   IOREG(0x2000B8B0)
#define MAILBOX1_SENDER IOREG(0x2000B8B4)
#define MAILBOX1_STATUS IOREG(0x2000B8B8)

boochow

typedef volatile struct                                          \
__attribute__((aligned(16))) _fb_info_t {
    uint32_t display_w;  //write display width
    uint32_t display_h;  //write display height
    uint32_t w;          //write framebuffer width
    uint32_t h;          //write framebuffer height
    uint32_t row_bytes;  //write 0 to get value
    uint32_t bpp;        //write bits per pixel
    uint32_t ofs_x;      //write x offset of framebuffer
    uint32_t ofs_y;      //write y offset of framebuffer

boochow

#include "py/runtime.h"
#include "py/mphal.h"
#include "py/obj.h"

// キーワード型引数を持つ関数
// pos_argsはpositional args、kw_argsはkeyword args
STATIC mp_obj_t gpu_fb_init(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
    return mp_const_none;
}
// 関数から関数オブジェクトを生成。第二引数の「2」はpositional argsの個数（必須の引数の個数）

boochow

// ldr pc, [pc, #24]                                                            
#define JMP_PC_24   0xe59ff018

typedef void (*exception_hander_t)(void);

typedef struct __attribute__((aligned(32))) _vector_table_t {
    const unsigned int vector[8]; // all elements shoud be JMP_PC_24            
    exception_hander_t reset;
    exception_hander_t undef;
    exception_hander_t svc;

boochow

#define IOREG(X)  (*(volatile uint32_t *) (X))

#define IRQ_PEND1         IOREG(0x2000B204)

#define SYST_CS  IOREG(0x20003000)
#define SYST_C0  IOREG(0x2000300C)
#define SYST_C1  IOREG(0x20003010)
#define SYST_C2  IOREG(0x20003014)
#define SYST_C3  IOREG(0x20003018)

boochow

import machine

counter = 0
def inc_ctr(t):
    global counter
    counter += 1
    print(t)

t = machine.Timer(0)
t.init(period=1000000,mode=t.PERIODIC,callback=lambda t:inc_ctr(t))

boochow

typedef enum _timer_mode_t {
    ONE_SHOT = 0,
    PERIODIC = 1,
} timer_mode_t;

typedef struct _machine_timer_obj_t {
    mp_obj_base_t base;
    uint32_t id;
    uint32_t period;
    timer_mode_t mode;

boochow

from machine import Pin,Timer
led = Pin(47)
led.init(led.OUT)
def led_toggle(t):
    global led
    led.value(1 - led.value())

tim = Timer(3)
tim.init(period=500000,mode=tim.PERIODIC,callback=lambda t:led_toggle(t))

boochow

import machine, utime
log = []
def add_log(t):
    global log
    log.append((utime.ticks_us() & 0xffffffff) + 1000 - t.compare_register())

times = 1000
tim = machine.Timer(3)
tim.init(period=1000,mode=tim.PERIODIC,callback=lambda t:add_log(t))

boochow

import gpu, framebuf
gpu.fb_init(240, 135, screen_w=1920, screen_h=1080)
fb = framebuf.FrameBuffer(gpu.fb_data(), 240, 135, framebuf.RGB565)
fb.fill_rect(0,0,240,135,0)

minX = -2.0
maxX = 1.0
width = 240
height = 135
aspectRatio = 1.0