I built and flashed an application with the following main code:
Code: Select all
void app_main(void)
{
static RTC_NOINIT_ATTR uint32_t test;
printf("test: 0x%08x\n", test);
test = 0xdeadbeef;
printf("test: 0x%08x\n", test);
}
Anyways, I expect the first print to output some random number after a reset (pressing the RESET button on the devkit), and the second one would be 0xdeadbeef. This is what I see when I connect the devkit using the UART port:
Code: Select all
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x166c
load:0x403c9700,len:0xbd4
load:0x403cc700,len:0x3034
entry 0x403c9954
I (24) boot: ESP-IDF v4.4.6-56-g987a77505b-dirty 2nd stage bootloader
I (25) boot: compile time 10:33:41
I (25) boot: Multicore bootloader
I (28) boot: chip revision: v0.0
I (32) boot.esp32s3: Boot SPI Speed : 80MHz
I (37) boot.esp32s3: SPI Mode : DIO
I (42) boot.esp32s3: SPI Flash Size : 4MB
I (47) boot: Enabling RNG early entropy source...
I (52) boot: Partition Table:
I (56) boot: ## Label Usage Type ST Offset Length
I (63) boot: 0 nvs WiFi data 01 02 0000b000 00005000
I (70) boot: 1 otadata OTA data 01 00 00010000 00002000
I (78) boot: 2 phy_init RF data 01 01 00012000 00001000
I (85) boot: 3 factory factory app 00 00 00020000 00260000
I (93) boot: 4 ota_0 OTA app 00 10 00280000 00010000
I (100) boot: 5 ota_1 OTA app 00 11 00290000 00010000
I (108) boot: 6 flash_test Unknown data 01 81 002a0000 00084000
I (115) boot: 7 nvs_key NVS keys 01 04 00324000 00001000
I (123) boot: End of partition table
I (127) boot: Defaulting to factory image
I (132) esp_image: segment 0: paddr=00020020 vaddr=3c080020 size=16888h ( 92296) map
I (157) esp_image: segment 1: paddr=000368b0 vaddr=3fc98840 size=0401ch ( 16412) load
I (161) esp_image: segment 2: paddr=0003a8d4 vaddr=40374000 size=05744h ( 22340) load
I (168) esp_image: segment 3: paddr=00040020 vaddr=42000020 size=7720ch (487948) map
I (259) esp_image: segment 4: paddr=000b7234 vaddr=40379744 size=0f0f8h ( 61688) load
I (272) esp_image: segment 5: paddr=000c6334 vaddr=600fe000 size=0002ch ( 44) load
I (281) boot: Loaded app from partition at offset 0x20000
I (281) boot: Disabling RNG early entropy source...
I (293) cpu_start: Multicore app
I (293) cpu_start: Pro cpu up.
I (293) cpu_start: Starting app cpu, entry point is 0x403755ec
0x403755ec: call_start_cpu1 at /home/powerfeather/Projects/esp-idf/components/esp_system/port/cpu_start.c:151
I (0) cpu_start: App cpu up.
I (310) cpu_start: Pro cpu start user code
I (310) cpu_start: cpu freq: 160000000
I (310) cpu_start: Application information:
I (313) cpu_start: Project name: test-app
I (318) cpu_start: App version: 54b2e48-dirty
I (323) cpu_start: Compile time: Oct 17 2023 10:33:37
I (329) cpu_start: ELF file SHA256: 9bb26ba61ba31495...
I (335) cpu_start: ESP-IDF: v4.4.6-56-g987a77505b-dirty
I (342) cpu_start: Min chip rev: v0.0
I (347) cpu_start: Max chip rev: v0.99
I (351) cpu_start: Chip rev: v0.0
I (356) heap_init: Initializing. RAM available for dynamic allocation:
I (364) heap_init: At 3FCA04F0 len 00049220 (292 KiB): D/IRAM
I (370) heap_init: At 3FCE9710 len 00005724 (21 KiB): STACK/DIRAM
I (377) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM
I (383) heap_init: At 600FE02C len 00001FD4 (7 KiB): RTCRAM
I (390) spi_flash: detected chip: generic
I (394) spi_flash: flash io: dio
W (398) spi_flash: Detected size(8192k) larger than the size in the binary image header(4096k). Using the size in the binary image header.
I (411) sleep: Configure to isolate all GPIO pins in sleep state
I (418) sleep: Enable automatic switching of GPIO sleep configuration
I (425) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
test: 0xa5bba835
test: 0xdeadbeef
Code: Select all
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x42073d4a
0x42073d4a: esp_pm_impl_waiti at /home/powerfeather/Projects/esp-idf/components/esp_pm/pm_impl.c:849
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x166c
load:0x403c9700,len:0xbd4
load:0x403cc700,len:0x3034
entry 0x403c9954
I (24) boot: ESP-IDF v4.4.6-56-g987a77505b-dirty 2nd stage bootloader
I (25) boot: compile time 10:33:41
I (25) boot: Multicore bootloader
I (28) boot: chip revision: v0.0
I (32) boot.esp32s3: Boot SPI Speed : 80MHz
I (37) boot.esp32s3: SPI Mode : DIO
I (42) boot.esp32s3: SPI Flash Size : 4MB
I (46) boot: Enabling RNG early entropy source...
I (52) boot: Partition Table:
I (55) boot: ## Label Usage Type ST Offset Length
I (63) boot: 0 nvs WiFi data 01 02 0000b000 00005000
I (70) boot: 1 otadata OTA data 01 00 00010000 00002000
I (78) boot: 2 phy_init RF data 01 01 00012000 00001000
I (85) boot: 3 factory factory app 00 00 00020000 00260000
I (93) boot: 4 ota_0 OTA app 00 10 00280000 00010000
I (100) boot: 5 ota_1 OTA app 00 11 00290000 00010000
I (108) boot: 6 flash_test Unknown data 01 81 002a0000 00084000
I (115) boot: 7 nvs_key NVS keys 01 04 00324000 00001000
I (123) boot: End of partition table
I (127) boot: Defaulting to factory image
I (132) esp_image: segment 0: paddr=00020020 vaddr=3c080020 size=16888h ( 92296) map
I (157) esp_image: segment 1: paddr=000368b0 vaddr=3fc98840 size=0401ch ( 16412) load
I (161) esp_image: segment 2: paddr=0003a8d4 vaddr=40374000 size=05744h ( 22340) load
I (167) esp_image: segment 3: paddr=00040020 vaddr=42000020 size=7720ch (487948) map
I (259) esp_image: segment 4: paddr=000b7234 vaddr=40379744 size=0f0f8h ( 61688) load
I (272) esp_image: segment 5: paddr=000c6334 vaddr=600fe000 size=0002ch ( 44) load
I (281) boot: Loaded app from partition at offset 0x20000
I (281) boot: Disabling RNG early entropy source...
I (293) cpu_start: Multicore app
I (293) cpu_start: Pro cpu up.
I (293) cpu_start: Starting app cpu, entry point is 0x403755ec
0x403755ec: call_start_cpu1 at /home/powerfeather/Projects/esp-idf/components/esp_system/port/cpu_start.c:151
I (0) cpu_start: App cpu up.
I (311) cpu_start: Pro cpu start user code
I (311) cpu_start: cpu freq: 160000000
I (311) cpu_start: Application information:
I (313) cpu_start: Project name: test-app
I (318) cpu_start: App version: 54b2e48-dirty
I (324) cpu_start: Compile time: Oct 17 2023 10:33:37
I (330) cpu_start: ELF file SHA256: 9bb26ba61ba31495...
I (336) cpu_start: ESP-IDF: v4.4.6-56-g987a77505b-dirty
I (343) cpu_start: Min chip rev: v0.0
I (347) cpu_start: Max chip rev: v0.99
I (352) cpu_start: Chip rev: v0.0
I (357) heap_init: Initializing. RAM available for dynamic allocation:
I (364) heap_init: At 3FCA04F0 len 00049220 (292 KiB): D/IRAM
I (371) heap_init: At 3FCE9710 len 00005724 (21 KiB): STACK/DIRAM
I (377) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM
I (384) heap_init: At 600FE02C len 00001FD4 (7 KiB): RTCRAM
I (391) spi_flash: detected chip: generic
I (395) spi_flash: flash io: dio
W (399) spi_flash: Detected size(8192k) larger than the size in the binary image header(4096k). Using the size in the binary image header.
I (412) sleep: Configure to isolate all GPIO pins in sleep state
I (418) sleep: Enable automatic switching of GPIO sleep configuration
I (426) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
test: 0xdeadbeef
test: 0xdeadbeef
So what's happening here?