diff options
Diffstat (limited to 'doc/pio.txt')
| -rw-r--r-- | doc/pio.txt | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/doc/pio.txt b/doc/pio.txt index c8d74c0..856111c 100644 --- a/doc/pio.txt +++ b/doc/pio.txt @@ -24,11 +24,15 @@ Connexions Relais Analog signals -------------- -- in NF (demod audio) PB1 (ADC12 IN9) + +on ADC1, configured in single-shot mode, software trigger: - in Vcc 12V PA5 (ADC12 IN5) - in SWR forward PA6 (ADC12 IN6) - in SWR reflected PA7 (ADC12 IN7) +on ADC2, configured in single-shot mode, triggered by a timer: +- in NF (demod audio) PB1 (ADC12 IN9) + u-blox NEO-M8N GPS module connection ------------------------------------ Yellow out UART3 TX to GPS RX PD8 @@ -52,10 +56,20 @@ I2C to Audio Codec STM32DISCOVERY onboard things ----------------------------- -- out Green LED PD12 -- out Orange LED PD13 -- out Red LED PD14 -- out Blue LED PD15 -- in Blue Push Button PA0 +- out Green LED (launcher) PD12 +- out Orange LED (fsm) PD13 +- out Red LED (audio) PD14 +- out Blue LED (audio in) PD15 +- in Blue Push Button PA0 + + +Analog audio input for 1750 tone detector +----------------------------------------- +1. Timer 6 set to 8kHz triggers ADC2 sample. +1. Timer 6 ISR accumulates N samples into a buffer. +1. When buffer full, copy it into queue. +1. `nf_analyse` task retrieves audio from queue, and gives it to tone detector. +1. Tone detector returns one of [yes, no, more samples needed]. +1. `nf_analyse` task updates FSM input accordingly. |