esp_partition_write

[geka000]

I trying to erase whole 8Mb partition with esp_partition_erase_range and it cause flash corruption and boot errors. when i tryed smaller partittion (2Mb) it works without issues.
here is my code
partition.csv

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# Name,Type,SubType,Offset,Size,Flags
# Note: if you change the phy_init or app partition offset,make sure to change the offset in Kconfig.projbuild
nvs,data,nvs,,0x006000,
phy_init,data,phy,,0x001000,
factory,app,factory,,2M,
data,data,0x90,0x0500000,8M,

app_main.c

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1. #include <stdio.h>
2. #include <esp_partition.h>
3. #include <string.h>
4.  
5. #define ERASE_SIZE 1024*1024
6.  
7.  
8. void app_main(){
9.     const esp_partition_t *partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, 0x90, NULL);
10.     printf("partition %p, %d\n", (void*)(partition->address), partition->size);
11.     //ESP_ERROR_CHECK(esp_partition_erase_range(partition, 0, partition->size));
12.  
13.     size_t i=0;
14.     do {
15.         printf("erasing %d\n",i);
16.         ESP_ERROR_CHECK(esp_partition_erase_range(partition, i, ERASE_SIZE));
17.         printf("done %d\n",i);
18.         i += ERASE_SIZE;
19.     } while( i < partition->size);
20.  
21.     printf("done\n");
22. }

GeSHi © Codebox Plus Extension

and monitor output

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I (30) boot: ESP-IDF v3.3-beta1-522-g0f927791b 2nd stage bootloader
I (30) boot: compile time 00:48:23
I (30) boot: Enabling RNG early entropy source...
I (36) boot: SPI Speed      : 40MHz
I (40) boot: SPI Mode       : DIO
I (44) boot: SPI Flash Size : 16MB
I (48) boot: Partition Table:
I (52) boot: ## Label            Usage          Type ST Offset   Length
I (59) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (67) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (74) boot:  2 factory          factory app      00 00 00010000 00200000
I (82) boot:  3 data             Unknown data     01 90 00500000 00400000
I (89) boot: End of partition table
I (93) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x078e0 ( 30944) map
I (113) esp_image: segment 1: paddr=0x00017908 vaddr=0x3ffb0000 size=0x01ea4 (  7844) load
I (116) esp_image: segment 2: paddr=0x000197b4 vaddr=0x40080000 size=0x00400 (  1024) load
0x40080000: _WindowOverflow4 at /Users/geka/SoftwareDevelop/Projects/esp32/esp-idf/components/freertos/xtensa_vectors.S:1779

I (120) esp_image: segment 3: paddr=0x00019bbc vaddr=0x40080400 size=0x06454 ( 25684) load
I (140) esp_image: segment 4: paddr=0x00020018 vaddr=0x400d0018 size=0x12460 ( 74848) map
0x400d0018: _flash_cache_start at ??:?

I (166) esp_image: segment 5: paddr=0x00032480 vaddr=0x40086854 size=0x02160 (  8544) load
0x40086854: prvCheckForValidListAndQueue at /Users/geka/SoftwareDevelop/Projects/esp32/esp-idf/components/freertos/timers.c:327

I (175) boot: Loaded app from partition at offset 0x10000
I (175) boot: Disabling RNG early entropy source...
I (178) cpu_start: Pro cpu up.
I (181) cpu_start: Application information:
I (186) cpu_start: Project name:     test_partition
I (192) cpu_start: App version:      1
I (196) cpu_start: Compile time:     Aug  3 2019 00:47:47
I (202) cpu_start: ELF file SHA256:  f9343944610556cb...
I (208) cpu_start: ESP-IDF:          v3.3-beta1-522-g0f927791b
I (215) cpu_start: Starting app cpu, entry point is 0x40080ec4
0x40080ec4: call_start_cpu1 at /Users/geka/SoftwareDevelop/Projects/esp32/esp-idf/components/esp32/cpu_start.c:267

I (0) cpu_start: App cpu up.
I (225) heap_init: Initializing. RAM available for dynamic allocation:
I (232) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (238) heap_init: At 3FFB2EE8 len 0002D118 (180 KiB): DRAM
I (244) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (251) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (257) heap_init: At 400889B4 len 0001764C (93 KiB): IRAM
I (263) cpu_start: Pro cpu start user code
I (281) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
partition 0x500000, 4194304
erasing 0
erase range
done 0
erasing 1048576
erase range
done 1048576
erasing 2097152
erase range
E (10410) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
E (10410) task_wdt:  - IDLE0 (CPU 0)
E (10410) task_wdt: Tasks currently running:
E (10410) task_wdt: CPU 0: main
E (10410) task_wdt: CPU 1: IDLE1
done 2097152
erasing 3145728
erase range
done 3145728
done
Guru Meditation Error: Core  0 panic'ed (IllegalInstruction). Exception was unhandled.
Memory dump at 0x400d1cbc: a0b200a4 ffffffff ffffffff
0x400d1cbc: app_main at /Users/geka/SoftwareDevelop/Projects/esp32/Uboy/software/test_partition/main/app_main.c:31

Core 0 register dump:
PC      : 0x400d1cc1  PS      : 0x00060930  A0      : 0x800d0989  A1      : 0x3ffb4c70  
0x400d1cc1: app_main at /Users/geka/SoftwareDevelop/Projects/esp32/Uboy/software/test_partition/main/app_main.c:31

A2      : 0x3ffb6a84  A3      : 0x3ffb69b0  A4      : 0x00000001  A5      : 0x00000001  
A6      : 0x00060021  A7      : 0x00000000  A8      : 0x800d1cb9  A9      : 0x3ffb4c50  
A10     : 0x3ffb6a84  A11     : 0x000000ff  A12     : 0x00000400  A13     : 0x06ff9ff8  
A14     : 0x3ffaffd4  A15     : 0x00060023  SAR     : 0x00000004  EXCCAUSE: 0x00000000  
EXCVADDR: 0x00000000  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xfffffffe  

ELF file SHA256: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

Backtrace: 0x400d1cc1:0x3ffb4c70 0x400d0986:0x3ffb4c90 0x40084659:0x3ffb4cb0
0x400d1cc1: app_main at /Users/geka/SoftwareDevelop/Projects/esp32/Uboy/software/test_partition/main/app_main.c:31

0x400d0986: main_task at /Users/geka/SoftwareDevelop/Projects/esp32/esp-idf/components/esp32/cpu_start.c:530

0x40084659: vPortTaskWrapper at /Users/geka/SoftwareDevelop/Projects/esp32/esp-idf/components/freertos/port.c:403


Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371 
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[ESP_Angus]

Hi geka000,

What ESP32 hardware do you have? Sorry for the silly question, but are you sure your flash size is 16MB? Most flash chips will wrap writes after their real size back to the beginning, so doing a larger erase on a smaller size chip will erase everything.

If you kept the default menuconfig Serial Flasher option of "detect flash size when flashing bootloader" then it's probably 16MB, as this is the size that esptool infers from the flash chip's JEDEC ID.