Added xtend_rssi module, pwm_meas and pwm_input mcu peripheral for lpc21xx arch #88
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…t driver for lpc21xx
…ule to compile properly, sources and headers not being included properly
* added pwm_input.c and pwm_input_arch.c to sources * make pwm_input_isr normal void functions for now * define PWM_INPUT_ITx to zero if not used
…resources for regular autopilot usage, can be added later if needed for something, cleaned up files a bit, fixed a couple mistakes (forgot a couple vars and changes on chan2)
…ultiple modules can use pwm input
…wm_input hw access and xtend_rssi module that uses measured pwm input values
… and xtend_rssi modules
flixr
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Nov 14, 2011
Added xtend_rssi module, pwm_meas and pwm_input mcu peripheral for lpc21xx arch
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Cherry-picked previous changes onto paparazzi/dev. Please let me know if other changes needed.
The two module system compiles on microjet_example.xml, but hasn't been tested yet. The original single module method was tested on a TWOG with the radio modem on the ground, not in flight. No changes to the mcu_periph things since the test.
PWM input currently only works on lpc21xx arch, with input channels setup focusing on TWOG/Tiny 2. arch, but relatively easy to add more cases.
pwm_input got moved to a mcu_periph for hw access, got rid of some available channels that seem to conflict with generally in use resources (except perhaps in other arch use cases, like csc or motor bench testing).
pwm_meas is just a wrapper module that initializes the hw so other modules do not initialize the same pwm_input twice
xtend_rssi module reads in the pwm duty cycle from a Digi 9Xtend radio modem and sends a message with the duty %, rssi dB above fade margin and the datalink time, useful in checking range. Depends on the pwm_meas module to initialize.
See also #86