GL-S20 User Guide¶

Hardware info¶

ESP32-WROOM-32U GPIO Labeling	SIGNAL	FUNCTION
GPIO0	GPIO0	connected to ch340c pin DTR for the device to enter download mode
GPIO1	BUTTON	button input, used for reset
GPIO2	GPIO2	used for control h2 reset io
GPIO3	GPIO3	used for control h2 boot io
GPIO4	PHY_SPI_INT	interrupt GPIO number SPI Ethernet module
GPIO5	PHY_RESET	PHY reset GPIO number of SPI Ethernet module
GPIO6	NETWORK_LED	network led control (green)
GPIO7	NETWORK_LED	network led control (red)
GPIO8	UART1 RX	used for connect to h2 uart0 tx
GPIO9	POWER_LED	power led control (green)
GPIO10	PHY_SPI_CSN	SPI CS GPIO number for SPI Ethernet module
GPIO11	PHY_SPI_MOSI	SPI MOSI GPIO number for SPI Ethernet module
GPIO12	PHY_SPI_CK	SPI SCLK GPIO number for SPI Ethernet module
GPIO13	PHY_SPI_MISO	SPI MISO GPIO number for SPI Ethernet module
GPIO14	POWER_LED	power led control (red)
GPIO15	NETWORK_LED	network led control (yellow)
GPIO16	BUTTON	button input, used for iot function control
GPIO17	IOT_LED	iot led control (green)
GPIO18	IOT_LED	iot led control (red)
GPIO19	IOT_LED	iot led control (yellow)
GPIO20	POWER_LED	power led control (yellow)
GPIO21	UART1 RTS	used for connect to h2 uart0 cts
GPIO35	GPIO35	NC
GPIO36	GPIO36	NC
GPIO37	GPIO37	NC
GPIO38	GPIO38	NC
GPIO39	GPIO39	NC
GPIO40	PTA_REQUEST	used for PTA
GPIO41	PTA_PRIORITY	used for PTA
GPIO42	PTA_GRANT	used for PTA
GPIO43	UART0 TX	used for debugging serial port output
GPIO44	UART0 RX	used for debugging serial port output
GPIO45	PTA_TX_LINE	used for PTA
GPIO46	GPIO46	NC
GPIO47	UART1 CTS	used for connect to h2 uart0 rts
GPIO48	UART1 TX	used for connect to h2 uart0 rx

Please refer to GL-S20 on IoT docs.

Please refer to User Manual on IoT docs.

Please refer to Firmware Compilation Guide on IoT docs.