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2	2
3	3	This chapter describe the checklist for not able to access to AT Command in Dragino LoRaWAN End Node base on STM32 chip.
4	4
	5	+
5	5	= 2. Not able to send AT Command =
6	6
7	7	* Do you use a USB to TTL Converter? If you use RS232 converter, it won't work
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8	8	* Can you see the output from console.
9	9	* Do you use the correct baudrate:
10	10
11		-{{{** Baudrate: 9600
12		-** Data bits: 8
13		-** Stop bits: 1
14		-** Parity: None
15		-** Flow control: None
16		-}}}
	12	+(% class="box" %)
	13	+(((
	14	+~** Baudrate: 9600
	15	+~** Data bits: 8
	16	+~** Stop bits: 1
	17	+~** Parity: None
	18	+~** Flow control: None
	19	+)))
17	17
18	18	* Did you have the hardware RXD pin connected correctly according to the user manual?
19	19	* Did you add the **ENTER** and **NEW LINE** after press send. Some serial utility doesn't add them by default. Below is an example for adding new line:
20	20
21		-[[image:https://wiki.dragino.com/images/thumb/5/5c/UART_access_1.png/600px-UART_access_1.png||height="419" width="600"]]
	24	+[[image:image-20220527083416-1.png]]
22	22
23	23	Add a new line in some software
24	24

image-20220527083416-1.png

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