Difference between revisions of "Br46 v1"

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*Verify module communication with the command "AT" <CR>
 
*Verify module communication with the command "AT" <CR>
 +
 +
*Change the radio name with 'ATSN, radio_name'
 +
*may need to issue fast data mode to radio at boot
 +
*may want to ignore UART data until connected.  (ATSW25)
  
 
*The BT module baudrate needs to be configured to 115,200 to work with the robot.  Issue this command:
 
*The BT module baudrate needs to be configured to 115,200 to work with the robot.  Issue this command:
 
** ATSW20,472,0,0,1 <CR>
 
** ATSW20,472,0,0,1 <CR>
 
**See [http://www.sparkfun.com/datasheets/Wireless/Bluetooth/BlueRadios_ATMP_Commands_Rev_3.5.1.1.0.pdf section 3.6.7] for details.
 
**See [http://www.sparkfun.com/datasheets/Wireless/Bluetooth/BlueRadios_ATMP_Commands_Rev_3.5.1.1.0.pdf section 3.6.7] for details.
 +
**will need to re-connect do serial at this point
 
*May wish to change the passcode at some point.  It is 'default'
 
*May wish to change the passcode at some point.  It is 'default'
 +
 +
  
 
==wireless BT connection==
 
==wireless BT connection==
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−
 
+
=issues=
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*when sending data wireless to the module, it appears to be very slow and only accept data periodically.  (The TX signal shows bursts of data.)
 +
*when sending data wired to the module, it accepts and transmits it rapid.  at 115k baud, not RTS negation, but at 921k there is RTS negation
  
  

Revision as of 00:43, 31 October 2010

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getting started

  • power the board with 10-25 volts. It should consume ~120mW. And when first powered, the red light flash indicating that it is discoverable by other BT devices.

Initial BT configuration

  • Can communicate directly with the BT module from the 'IMU1' port. With a virgin module, the baud rate is 9600, N, 8, 1. Or just 'do_serial.py <port> 9600' You can connect a PSER directly to this port.
  • Verify module communication with the command "AT" <CR>
  • Change the radio name with 'ATSN, radio_name'
  • may need to issue fast data mode to radio at boot
  • may want to ignore UART data until connected. (ATSW25)
  • The BT module baudrate needs to be configured to 115,200 to work with the robot. Issue this command:
    • ATSW20,472,0,0,1 <CR>
    • See section 3.6.7 for details.
    • will need to re-connect do serial at this point
  • May wish to change the passcode at some point. It is 'default'


wireless BT connection

  • Should be able to pair with the module with standard PC software. Using the pass code 'default'
  • When 'connected' the blue LED is visible.
  • When a BT connection is made or broken, the module reports over the serial port. These message could interfere with FUP command processing.

SC connection

  • Connect the robot FUP to the port labeled SC1
  • Use the port SC2 for programming and communication (with either PSER or SWIFI).
  • If no other device is connected to the SC2, then the BT module will be able to communicate with the robot connected at SC1


issues

  • when sending data wireless to the module, it appears to be very slow and only accept data periodically. (The TX signal shows bursts of data.)
  • when sending data wired to the module, it accepts and transmits it rapid. at 115k baud, not RTS negation, but at 921k there is RTS negation


development

46 class 2

40 class 1

mosfets

battery module


logic

note

  • PSer2hb leaves IO pins as NC. Will need to add pullup/pulldown
  • Pser1 probably also leaves IO as NC.
  • want to use FUP IP pin to disconnected on-board bluetooth Rx driver.


fuses and holders

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