Board-dat/SCM/SCM1030-dat/SCM1030-dat.md
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@@ -105,5 +105,6 @@ to get free pins, remove card in [[SD-dat]]
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- https://wiki.ai-thinker.com/esp32-cam
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- demo code - https://github.com/donny681/ESP32_CAMERA_QR
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- use guide CN - https://github.com/donny681/ESP32_CAMERA_QR/wiki
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-- [[ESP-SDK-dat]]
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+
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+- [[ESP-SDK-dat]] - [[ESP32-HDK-dat]]
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Chip-cn-dat/Espressif-dat/ESP32-dat/ESP32-HDK-dat/ESP32-HDK-dat.md
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@@ -37,6 +37,8 @@
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| 22 | | U1 | |
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| 23 | | VSPI | |
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+
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+
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### RMT
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- RMT_SIG_IN0~7
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![](2024-12-27-18-11-50.png)
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+## boot mode
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+
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+### Table 3-1. Default Configuration of Strapping Pins
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+
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+- from esp32 chip datasheet
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+
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+| Strapping Pin | note | Default Configuration Bit | Value |
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+| ------------- | ------ | ------------------------- | ----- |
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+| GPIO0 | | Pull-up | 1 |
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+| GPIO2 | | Pull-down | 0 |
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+| MTDI | GPIO12 | Pull-down | 0 |
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+| MTDO | GPIO15 | Pull-up | 1 |
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+| GPIO5 | | Pull-up | 1 |
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+
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+### Table 6: Chip Boot Mode Control
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+
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+- from esp32 wroom module datasheet
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+
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+| Boot Mode | GPIO0 | GPIO2 |
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+| ------------------------ | ----- | --------- |
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+| SPI Boot Mode | 1 | Any value |
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+| Joint Download Boot Mode | 0 | 0 |
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+
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+
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+
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## Modules
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- [[ESP-SDK-dat]]
Chip-cn-dat/Espressif-dat/ESP32-dat/ESP32-modules-dat/ESP32-WROOM-DAT/ESP32-WROOM-DAT.md
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@@ -12,6 +12,7 @@ https://www.electrodragon.com/product/wroom-32/
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![](2024-01-09-14-50-52.png)
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### 32E
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+
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The ESP32-WROOM-32E and ESP32-WROOM-32D are both modules based on the ESP32 system-on-a-chip (SoC) by Espressif Systems. They are very similar in terms of features and capabilities but have a few key differences.
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The main difference between the ESP32-WROOM-32E and ESP32-WROOM-32D lies in their RF (Radio Frequency) performance.
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@@ -106,6 +107,9 @@ obseleted
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- [[NWI1245-dat]] - [[NWI1206-dat]] - [[NWI1100-dat]]
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+
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## ref
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- [[esp-dat]]