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Fix incorrect Flash Size in Esp32c3 (#5279)

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original PR #5278 from @s-hadinger, which is not accepted because of failure of CLAassistant

`ESP.getFlashChipSize()` always returns `0` on Esp32c3 due to a change in the Flash layout. It looks like to Espressif documentation was not updated accordingly.

https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/api-reference/storage/spi_flash.html#spi-flash-size

- Esp32 and Esp32s3 have the flash information update by esptool.py
and decribed here
- https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/storage/spi_flash.html
Esp32c3 has no image information at 0x0000 and contrary to the docu
this information is at offset 0x0000
This commit is contained in:
Jason2866 2021-06-11 12:46:14 +02:00 committed by GitHub
parent 5ae3e836f9
commit ea236e28e5
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1 changed files with 7 additions and 3 deletions
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10
cores/esp32/Esp.cpp
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@ -35,15 +35,19 @@ extern "C" {
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
#include "esp32/rom/spi_flash.h"
#include "soc/efuse_reg.h"
#define ESP_FLASH_IMAGE_BASE 0x1000 // Flash offset containing flash size and spi mode
#elif CONFIG_IDF_TARGET_ESP32S2
#include "esp32s2/rom/spi_flash.h"
#define ESP_FLASH_IMAGE_BASE 0x1000
#elif CONFIG_IDF_TARGET_ESP32C3
#include "esp32c3/rom/spi_flash.h"
#define ESP_FLASH_IMAGE_BASE 0x0000 // Esp32c3 is located at 0x0000
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
#else // ESP32 Before IDF 4.0
#include "rom/spi_flash.h"
#define ESP_FLASH_IMAGE_BASE 0x1000
#endif
/**
@ -289,7 +293,7 @@ const char * EspClass::getSdkVersion(void)
uint32_t EspClass::getFlashChipSize(void)
{
esp_image_header_t fhdr;
if(flashRead(0x1000, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
if(flashRead(ESP_FLASH_IMAGE_BASE, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
return 0;
}
return magicFlashChipSize(fhdr.spi_size);
@ -298,7 +302,7 @@ uint32_t EspClass::getFlashChipSize(void)
uint32_t EspClass::getFlashChipSpeed(void)
{
esp_image_header_t fhdr;
if(flashRead(0x1000, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
if(flashRead(ESP_FLASH_IMAGE_BASE, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
return 0;
}
return magicFlashChipSpeed(fhdr.spi_speed);
@ -307,7 +311,7 @@ uint32_t EspClass::getFlashChipSpeed(void)
FlashMode_t EspClass::getFlashChipMode(void)
{
esp_image_header_t fhdr;
if(flashRead(0x1000, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
if(flashRead(ESP_FLASH_IMAGE_BASE, (uint32_t*)&fhdr, sizeof(esp_image_header_t)) && fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
return FM_UNKNOWN;
}
return magicFlashChipMode(fhdr.spi_mode);