ESP-WROVER-KIT V4.1 Custom bootloader hooks read memory
Posted: Fri Feb 10, 2023 11:17 am
I am using the ESP-WROVER-KIT V4.1. I am running the bootloader_hooks example. I am trying to read SRAM within the 'bootloader_before_init' function.
Is there any way of reading memory at that point?
- void bootloader_before_init(void) {
- /* Keep in my mind that a lot of functions cannot be called from here
- * as system initialization has not been performed yet, including
- * BSS, SPI flash, or memory protection. */
- char *p = (char *)0x400A0000;
- char first_byte = p[0];
- ESP_LOGI("HOOK", "This hook is called BEFORE bootloader initialization");
- }