SPMOD - BT

Overview

SPMOD-BT(Bluetooth module) uses YDJ-23.

SPMOD - BLE Introduction

• Using Sipeed-SPMOD interface(2.54mm * 8PIN )，unified MaixPy board interface
• Using SP-MOD UART to communicate with Bluetooth module
• JDY-23 Bluetooth module:Support BLE 5.0(Compatible with BLE4.0、BLE4.2).Communication interface adopts UART interface. The module supports AT command control. It has ultra-low power design and high reliability design.
• Two built-in LED，making module status easier to see.
• Size:25.6*20.2*3.2mm

JDY-23 Introduction:

SPMOD_BT pin description :

• Mode of connection:

AT instruction list:

See JDY-23-V2.1.pdf for more information

Usage

• Process
  1. Send AT instruction
  2. Receive the reply
  3. Determines whether the setup was successful

C :

// set uart rx/tx func to io_6/7
fpioa_set_function(6, FUNC_UART1_RX + UART_NUM * 2);
fpioa_set_function(7, FUNC_UART1_TX + UART_NUM * 2);
uart_init(UART_DEVICE_1);
uart_configure(UART_DEVICE_1, 9600, 8, UART_STOP_1, UART_PARITY_NONE);

//change the name of sp_bt module to MAIXCUBE
uart_send_data(UART_NUM, "AT+NAMEMAIXCUBE\r\n", strlen("AT+NAMEMAIXCUBE\r\n")); //send AT order
msleep(100);
ret = uart_receive_data(UART_NUM, rcv_buf, sizeof(rcv_buf)); //receive response
if(ret != 0 && strstr(rcv_buf, "OK"))
{
   printk(LOG_COLOR_W "set name success!\r\n");
}

// get the name of sp_bt module
uart_send_data(UART_NUM, "AT+NAME\r\n", strlen("AT+NAME\r\n")); //send AT order
msleep(100);
ret = uart_receive_data(UART_NUM, rcv_buf, sizeof(rcv_buf)); //receive response
if(ret != 0 && strstr(rcv_buf, "NAME"))
{
   printk(LOG_COLOR_W "get name success!\r\n");
}

MaixPy :

  # set uart rx/tx func to io_6/7
fm.register(6,fm.fpioa.UART1_RX)
fm.register(7,fm.fpioa.UART1_TX)
uart = UART(UART.UART1,9600,8,1,0,timeout=1000, read_buf_len=4096)

#change the name of sp_bt module to MAIXCUBE
uart.write("AT+NAMEMAIXCUBE\r\n") #send AT order
time.sleep_ms(100)
read_data = uart.read() #receive response
if read_data:
    read_str = read_data.decode('utf-8')
    count = read_str.count("OK")
    if count != 0:
        uart.write("set name success\r\n")

# get the name of sp_bt module
uart.write("AT+NAME\r\n") #send AT order
time.sleep_ms(100)
read_data = uart.read() #receive response
if read_data:
    read_str = read_data.decode('utf-8')
    count = read_str.count("NAME")
    if count != 0:
        uart.write("get name success\r\n")

Note that you must add \r\n after sending AT instruction

Result:

Using BLE Utility to connect the device to do the send and receive test results are as follows:

Runtime environments:

Outlook

• SPMOD_BLE Size drawing:

Resource Link