Yifan oled brightness

main.c

#define DEVICE_BASE         (0xE0000000)
#define IFTU0_BASE (DEVICE_BASE + 0x5020000)

uint *iftu0_base = NULL;

static inline void turnon_oled(int a2, int a3)
{
    if (a2 == 128)
    {
        *(iftu0_base + 0x2000 + 32) = 0;
        *(iftu0_base + 0x2000 + 4) &= ~1;
    }
    else
    {
        *(iftu0_base + 0x2000 + 32) = a2;
        *(iftu0_base + 0x2000 + 4) |= 1;
    }

    if (a3 == 256)
    {
        *(iftu0_base + 0x1000 + 160) = 1;
    }
    else
    {
        *(iftu0_base + 0x1000 + 140) = a3;
        *(iftu0_base + 0x1000 + 160) = 0;
    }
}

int brightness_adjust(void)
{
    for (int j = 0; j < 256; j += 2)
    {
        turnon_oled(4, j);
        for (int k = 0; k < 0x1000000; k++);
    }
    turnon_oled(128, 0);
    for (int j = 254; j >= 0; j -= 2)
    {
        turnon_oled(4, j);
        for (int k = 0; k < 0x1000000; k++);
    }
}

int main() {
  SceKernelAllocMemBlockKernelOpt opt = {0};
	opt.size = sizeof(opt);
	opt.attr = 2;
	opt.paddr = IFTU0_BASE;
	int payload_block = ksceKernelAllocMemBlock("hw_regs", 0x20100206, 0x3000, &opt); // Need 0x2032 but it has to be page-aligned so 0x3000
	if (payload_block < 0)
		LOG("AllocMemBlock ret=0x%08X", payload_block);
	int ret = ksceKernelGetMemBlockBase(payload_block, (void**)&iftu0_base);
  
  // Call the functions on the mapped address
}