board-series/board-series-dat.md
... ...
@@ -1,10 +1,10 @@
1 1
2
-# board-app-dat
2
+# board-series-dat
3 3
4 4
5 5
6
-## ESP32 APP
7
-- [[esp-relay-board-dat]]
6
+## ESP32
7
+- [[esp-relay-board-dat]] - [[ESP-DAT]]
8 8
9 9
10 10
chip-cn/Espressif/ESP32/ESP32-HDK-dat/ESP32-HDK-dat.md
... ...
@@ -72,6 +72,25 @@ ref
72 72
- https://electropeak.com/learn/full-guide-to-esp32-pinout-reference-what-gpio-pins-should-we-use/
73 73
- https://randomnerdtutorials.com/esp32-pinout-reference-gpios/
74 74
75
+
76
+
77
+## UART
78
+
79
+pin 17 / 18 = SD2 / SD3 = UART1
80
+pin 27 / 28 = IO 26 / 27 = UART2
81
+
82
+
83
+## NC Pins
84
+
85
+V3 Chips
86
+- Pins GPIO6 to GPIO11 on the ESP32-D0WD-V3/ESP32-D0WDR2-V3 chip are connected to the SPI flash integrated on the module and are not led out.
87
+
88
+V2 Chips
89
+- Pins SCK/CLK, SDO/SD0, SDI/SD1, SHD/SD2, SWP/SD3, and SCS/CMD, i.e. GPIO6 to GPIO11 are used to connect to the module integrated SPI flash, not recommended for other functions.
90
+
91
+
92
+
93
+
75 94
## Modules
76 95
77 96
- [[ESP32-WROOM-dat]] - [[ESP32-C3-dat]]