Guition JC-ESP32P4-M3-DEV

This board features a Guition JC-ESP32P4-M3, which is a module that includes an ESP32-P4 and an ESP32-C6 as a co-processor for WIFI/Bluetooth.

Links

• Official Sales Page
• Board Description
• ESP32-P4 Datasheet
• ESP32-P4 Technical Reference
• ESP32-C6 Datasheet
• ESP32-C6 Technical Reference

Github Repos

• https://github.com/DRubioG/JC-ESP32P4-M3-DEV (Unofficial Schematics)
• https://github.com/p1ngb4ck/unofficial_guition_esp32p4_repo/tree/main/JC-ESP32P4-M3-Dev (Unofficial Schematics with other documents)

Board Connectors

Symbol	Description
1	BOOT (SW1) - Boot Mode/GPIO35
2	RESET (SW2) - CHIP_PU
3	Microphone (MIC1)
4	Speaker (CN1)
5	microSD Card Reader (J1)
6	Battery Connector (CN4)
7	Battery Start Charging (SW3)
8	USB High Speed (USB3)
9	USB Full Speed (USB2)
10	USB TTL/UART (USB1)
11	MX1.25 4P Power Input (CN2)
12	Ethernet (RJ1)
13	Camera CSI (J3)
14	Display DSI (J2)
15	MX1.25 4P RS485/RS422 Input (J5)
16	MX1.25 4P RS485/RS422 Driver Output (J4)
17	JST SH1.0 4P I2C (CN3)
18	FPC Capacitive Touch 6pin 0.5mm (FPC1)
19	Backlight LED Output (CN5)
20	Expansion IO (JP1)

Inputs and Connectors

Microphone

MIC1 connects to ES8311 (DAC chip)

Speaker

DAC Chip is connected to NS4150 (Audio Amplifier), which can be enabled by setting GPIO11 to HIGH.

DAC Chip

Controlled with I2C using GPIO7 (SDA) and GPIO8 (SCL) and an address of 0x18.

microSD Card Reader

MX1.25 Power Input (CN2)

CN2 is a 4-pin Power Input and UART, pins:

PIN	Description
1	5V Power
2	UART TX (GPIO37)
3	UART RX (GPIO38)
4	GND

Ethernet

JST SH1.0mm 4P I2C (CN3)

4 Pin interface for I2C Communication

PIN	Description
1	GND
2	3.3V Power
3	SCL (GPIO8)
4	SDA (GPIO7)

MX1.25 4P RS485/RS422 (J5 Input, J4 Output)

Uses a MAX485 to handle input and send output

Input (J5)

PIN	Description
1	5V Power
2	R Receiver Output
3	D Driver Input
4	GND

Output (J4)

PIN	Description
1	5V Power
2	A Noninverting Driver Output
3	B Inverting Driver Output
4	GND

To enable it, UART must be used through GPIO27 (RX/R) and GPIO26 (TX/D).

Backlight LED Output (CN5)

It uses an MP3202 to power up to 39 white LEDs.

To enable the chip, GPIO23 must be used.

PIN	Description
1	Top / Cathode
2	Bottom / Anode
3	GND
4	GND

FPC Capacitive Touch 6pin 0.5mm (FPC1)

PIN	Description
1	3.3V Power
2	GND
3	SDA (GPIO7)
4	SCL (GPIO8)
5	INT
6	RST

Expansion IO (JP1)

PIN	Description
1	3.3V Power
2	5V Power
3	3.3V Power
4	5V Power
5	GND
6	GND
7	GPIO1
8	NC
9	GPIO2
10	GPIO47
11	GPIO3
12	GPIO46
13	GPIO4
14	GPIO45
15	GPIO5
16	GND
17	GPIO20
18	3.3V Power
19	GPIO32
20	C6_U0RXD (C6 RX)
21	GPIO33
22	C6_U0TXD (C6 TX)
23	SDA
24	C6_IO9 (C6 BOOT)
25	SCL
26	C6_CHIP_PU (C6 RESET)

Setup

• Install ESP32-IDF

VSCode

• Install Extension
• Select ESP-IDF: Explorer sidebar
• Advanced -> New Project Wizard
• Select SDK Version
• ESP-IDF Templates -> sample_project click on button Create project using template sample_project and select location
• Select Command SDK Configuration Editor (menuconfig)
• Select Component config -> Hardware Settings -> Chip Revision
• Check Select ESP32-P4 revisions <3.0 (No >=3.x Support)
• Minimum Supported ESP32-P4 Revision select Rev v1.0
• Build Project
• Flash Device select UART

The led (with resistance) should be connected to GND (JP1 Pin 5) and GPIO1 (JP1 Pin 7) and should blink each second.

main/main.c

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_log.h"

#define BLINK_GPIO GPIO_NUM_1
#define BLINK_PERIOD 1000

static const char *TAG = "blink";
static uint8_t s_led_state = 0;

static void blink_led(void)
{
    /* Set the GPIO level according to the state (LOW or HIGH)*/
    gpio_set_level(BLINK_GPIO, s_led_state);
}

static void configure_led(void)
{
    ESP_LOGI(TAG, "Example configured to blink GPIO LED!");
    gpio_reset_pin(BLINK_GPIO);
    /* Set the GPIO as a push/pull output */
    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
}

void app_main(void)
{
    /* Configure the peripheral according to the LED type */
    configure_led();

    while (1) {
        ESP_LOGI(TAG, "Turning the LED %s!", s_led_state == true ? "ON" : "OFF");
        blink_led();
        /* Toggle the LED state */
        s_led_state = !s_led_state;
        vTaskDelay(BLINK_PERIOD / portTICK_PERIOD_MS);
    }
}

Module Pinout