After enabling the SCB cache, screen flickering occurs during display refresh. Hi,MasterMCU: STM32H743IILVGL: V9.1Problem Description:I have an external SDRAM with a size of 32MB.The program is configured as follows:void sys_cache_enable(void)
{
SCB_EnableICache();
SCB_EnableDCache();
SCB->CACR |= 1 << 2;
}
void mpu_memory_protection(void)
{
// RAM 512K
mpu_set_protection( 0x24000000,
MPU_REGION_SIZE_512KB,
MPU_REGION_NUMBER1,
MPU_REGION_FULL_ACCESS,
MPU_ACCESS_SHAREABLE,
MPU_ACCESS_CACHEABLE,
MPU_ACCESS_NOT_BUFFERABLE);
// EXSDRAM 32M
mpu_set_protection( 0XC0000000,
MPU_REGION_SIZE_32MB,
MPU_REGION_NUMBER2,
MPU_REGION_FULL_ACCESS,
MPU_ACCESS_SHAREABLE,
MPU_ACCESS_CACHEABLE,
MPU_ACCESS_NOT_BUFFERABLE);
}The LVGL related frame buffers are stored in the external SDRAM as shown below.static color_t render_buff1[1024 * 600];
static color_t render_buff2[1024 * 600];
static color_t frame_buff[1024 * 600];
// LVGL uses double buffering for rendering.
lv_display_set_buffers(disp, render_buff1, render_buff2,
sizeof(render_bu
