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8a170129 | 1 | ------------------------------------------------------------------------------- |
2 | FIDELIX FM25Q32 | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is a set of example captures of a FIDELIX FM25Q32 SPI flash chip | |
6 | (32MBit == 4Mbyte) that is read by ESP32. | |
7 | ||
8 | The first part is the 2nd-stage bootloader loaded from SPI flash (using | |
9 | QuadSPI @ 10MHz). Then the 2nd-stage bootloader writes 02_blink to SPI flash. | |
10 | ||
11 | The SPI hardware used is ESP32 DevKitC (from ESPRESSIF). | |
12 | ||
13 | Details: | |
14 | https://espressif.com/sites/default/files/documentation/esp32-devkitc_getting_started_guide_en.pdf | |
15 | https://github.com/espressif/esp-idf | |
16 | ||
17 | ||
18 | Logic analyzer setup | |
19 | -------------------- | |
20 | ||
21 | The logic analyzer used was a DreamSourceLab DSLogic (at 100MHz): | |
22 | ||
23 | Probe FM25Q32 pin | |
24 | ----------------------- | |
25 | 0 CS | |
26 | 1 CLK | |
27 | 2 MISO | |
28 | 3 MOSI | |
29 | ||
30 | ||
31 | Data | |
32 | ---- | |
33 | ||
34 | Output of esptool.py during flash (esp/esp-idf/examples/02_blink$ make flash): | |
35 | ||
36 | Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000)... | |
37 | esptool.py v2.0-dev | |
38 | Connecting... | |
39 | Uploading stub... | |
40 | Running stub... | |
41 | Stub running... | |
42 | Changing baud rate to 921600 | |
43 | Changed. | |
44 | Attaching SPI flash... | |
45 | Configuring flash size... | |
46 | Erasing flash... | |
47 | Took 0.00s to erase flash block | |
48 | Wrote 8192 bytes at 0x00001000 in 0.1 seconds (552.2 kbit/s)... | |
49 | Hash of data verified. | |
50 | Erasing flash... | |
51 | Took 0.00s to erase flash block | |
52 | Wrote 245760 bytes at 0x00010000 in 3.8 seconds (523.2 kbit/s)... | |
53 | Hash of data verified. | |
54 | Erasing flash... | |
55 | Took 0.00s to erase flash block | |
56 | Wrote 8192 bytes at 0x00004000 in 0.1 seconds (556.3 kbit/s)... | |
57 | Hash of data verified. | |
58 | ||
59 | Leaving... |