User's Manual

Chengdu Ebyte Electronic Technology Co., Ltd E104-BT05 User Manual

4.4 Data valid indication

In the transparent transmission mode, the user can set the delayed output data by “AT++DATDLY=1” command.

After the delay output is set, the DATA_LINK pin of the module will output low level 10ms before the data is sent, so as

to wake up the external MCU. After 10 ms, the data will be sent, and the DATA_LINK pin is pulled high after the data

transmission is completed. As shown in the figure:

4.5 IO level reading

The user can request the specified IO pin level by AT command AT+IO0?" or "AT+IO1?"(See 6.39 Read IO0 inpu and 6.40

Read IO1 input)

4.6 IO output

The user can request IO2 output level by AT command "AT+IO2=1" or "AT+IO2=0"

(See 6.41 Set IO2 output and 6.42 Set IO3 output).

4.7 PWM output

The user can set the PWM cycle by AT command "AT + PWMFRQ = xx" and set the PWM0 duty cycle by AT

command "AT + PWM0 = xx".

See more details about PWM setting (6.43 Read/Set PWM0 duty cycle, PWM output cycle setting 6.47 Request/Set

PWM output cycle

PWM output example as following: