diff options
Diffstat (limited to 'software/rhmixxx/analog.c')
-rw-r--r-- | software/rhmixxx/analog.c | 83 |
1 files changed, 54 insertions, 29 deletions
diff --git a/software/rhmixxx/analog.c b/software/rhmixxx/analog.c index e15c2eb..5ddd20f 100644 --- a/software/rhmixxx/analog.c +++ b/software/rhmixxx/analog.c @@ -27,56 +27,81 @@ #define ANALOG_PORT PORTF #define ANALOG_DDR DDRF -#ifndef DISABLE_ANALOG - #include <LUFA/Drivers/Peripheral/ADC.h> -uint8_t analog_last_sent[ANALOG_NUM_INPUTS]; + +static struct { + uint8_t enabled; + uint8_t last_sent; +} analog_input_state[ANALOG_NUM_INPUTS]; + static uint8_t analog_channels[] = { ADC_CHANNEL0, ADC_CHANNEL1, ADC_CHANNEL2, ADC_CHANNEL3, ADC_CHANNEL4, ADC_CHANNEL5, ADC_CHANNEL6, ADC_CHANNEL7 }; -#endif - void analog_init(void) { ANALOG_DDR = 0x00; ANALOG_PORT = 0x00; -#ifndef DISABLE_ANALOG int i; - for(i = 0; i < ANALOG_NUM_INPUTS; ++i) - analog_last_sent[i] = 0; + for(i = 0; i < ANALOG_NUM_INPUTS; ++i) { + analog_input_state[i].enabled = 0; + analog_input_state[i].last_sent = 0; + } - ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_2); - ADC_SetupChannel(ADC_CHANNEL0); - ADC_SetupChannel(ADC_CHANNEL1); - ADC_SetupChannel(ADC_CHANNEL2); - ADC_SetupChannel(ADC_CHANNEL3); - ADC_SetupChannel(ADC_CHANNEL4); - ADC_SetupChannel(ADC_CHANNEL5); - ADC_SetupChannel(ADC_CHANNEL6); - ADC_SetupChannel(ADC_CHANNEL7); -#endif + ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_32); } -uint8_t analog_get_value(uint8_t channel) +static void analog_channel_set_enabled(uint8_t channel, uint8_t enabled) +{ + if(enabled) { + ADC_SetupChannel(channel); + analog_input_state[channel].enabled = 1; + } else { + ADC_DisableChannel(channel); + analog_input_state[channel].enabled = 0; + } +} + +void analog_enable_channel(uint8_t channel) { -#ifndef DISABLE_ANALOG if(channel < ANALOG_NUM_INPUTS) - return analog_last_sent[channel]; -#endif - return 0; + analog_channel_set_enabled(channel, 1); + else if(channel == ANALOG_MIDI_NOTE_ALL_INPUTS - ANALOG_MIDI_NOTE_OFFSET) { + int i; + for(i = 0; i < ANALOG_NUM_INPUTS; ++i) + analog_channel_set_enabled(i, 1); + } +} + +void analog_disable_channel(uint8_t channel) +{ + if(channel < ANALOG_NUM_INPUTS) + analog_channel_set_enabled(channel, 0); + else if(channel == ANALOG_MIDI_NOTE_ALL_INPUTS - ANALOG_MIDI_NOTE_OFFSET) { + int i; + for(i = 0; i < ANALOG_NUM_INPUTS; ++i) + analog_channel_set_enabled(i, 0); + } +} + +uint8_t analog_get_value(uint8_t channel) +{ + if(channel >= ANALOG_NUM_INPUTS) + return 0; + + return analog_input_state[channel].last_sent; } void analog_task(void) { -#ifndef DISABLE_ANALOG uint8_t i; for(i = 0; i < ANALOG_NUM_INPUTS; ++i) { - uint8_t tmp = (ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | analog_channels[i])) >> 3; - if(analog_last_sent[i] != tmp) { - analog_last_sent[i] = tmp; - eventqueue_push(ANALOG_MIDI_NOTE_OFFSET + i, 0); + if(analog_input_state[i].enabled) { + uint8_t tmp = (ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | analog_channels[i])) >> 3; + if(analog_input_state[i].last_sent != tmp) { + analog_input_state[i].last_sent = tmp; + eventqueue_push(ANALOG_MIDI_NOTE_OFFSET + i, 0); + } } } -#endif } |