ESP32

SoCs in the ESP32 series use Tensilica Xtensa LX6 or LX9 CPU, or a RISC-V CPU.

Target name	SoC	Probe
`ESP32_UART`	ESP32	UART

Supported Debug Probes

Any of the built-in UART channels of the PLT (UART0, UART1).
USB-CDC probes with HW flow control (RTS) signals:

Programming over UART (USB-CDC)

UART connection for ESP32
PLT Signal	USB-CDC probe Signal	ESP32 Signal
n.c.	`UARTx_RXD`	`TXD` (GPIO1)
n.c.	`UARTx_TXD`	`RXD` (GPIO3)
n.c.	`UARTx_RTS`	`EN`
`3V3`	n.c.	`3V3`
`GNDx`	`GND`	`GND`
`GNDx`	`GND`	`GPIO0`

- command: define DUT_UART "UART2" # UART channel for ESP32 UART interaction
- command: define DUT_POWER "3V3"  # Power rail to control ESP32
# - command: define FTDI_VIDPID "0403:6001" # FTDI (generic)
- command: define FTDI_VIDPID "0403:6010" # FTDI FT2232 series

- command: uartCfg %DUT_UART% 115200
  id: "%FTDI_VIDPID%"
  interface: "0"  # FTDI Channel A
  # interface: "1"  # FTDI Channel B
  # path: "7"  # USB Path (7: Front, right connector)

# Power cycle sequence to put ESP32 into programming mode.
- command: power %DUT_POWER% on
- command: sleepms 100
- command: power %DUT_POWER% off
- command: sleepms 100
- command: power %DUT_POWER% on
- command: sleepms 100

- command: identify ESP32_UART %DUT_UART%

# Program bootlader, partition table, and binary.
- command: program ESP32_UART %DUT_UART% 0x1000:esp32-wroom-32_bootloader.bin,0x8000:esp32-wroom-32_partitions_singleapp.bin,0x10000:esp32-wroom-32_hello_world_zephyr_2.7.0.bin

See also

Programming over UART (built-in UART)

UART connection for ESP32
PLT Signal	ESP32 Signal
`UARTx_RXD`	`TXD` (GPIO1)
`UARTx_TXD`	`RXD` (GPIO3)
`UARTx_CTS`	n.c.
`UARTx_RTS`	`EN`
`UARTx_VDD`	`3V3`
`GNDx`	`GND`
`GNDx`	`GPIO0`

# UART0 (HD78)
# - command: define DUT_UART "UART0" # UART channel for ESP32 UART interaction
# - command: define DUT_POWER "UART0" # Power rail to control ESP32

# UART1 (HD78)
- command: define DUT_UART "UART1" # UART channel for ESP32 UART interaction
- command: define DUT_POWER "UART1" # Power rail to control ESP32

- command: uartCfg %DUT_UART% 115200

# Power cycle sequence to put ESP32 into programming mode.
- command: power %DUT_POWER% on
- command: sleepms 100
- command: power %DUT_POWER% off
- command: sleepms 100
- command: power %DUT_POWER% on
- command: sleepms 100

- command: identify ESP32_UART %DUT_UART%

# Program bootlader, partition table, and binary.
- command: program ESP32_UART %DUT_UART% 0x1000:esp32-wroom-32_bootloader.bin,0x8000:esp32-wroom-32_partitions_singleapp.bin,0x10000:esp32-wroom-32_hello_world_zephyr_2.7.0.bin

Example PLTcloud Projects