kopia lustrzana https://github.com/eleccoder/raspi-pico-aprs-tnc
Proper single shot/loop mode
eleccoder
rodzic
a41768fd53
commit
113778cbf5
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@ -27,12 +27,18 @@
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// WARNING: ATTOW, the pico audio PWM lib worked only @ 22050 Hz sampling frequency and 48 MHz system clock
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// This is documented here https://github.com/raspberrypi/pico-extras
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// This is documented here: https://github.com/raspberrypi/pico-extras
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#define PICO_EXTRA_AUDIO_PWM_LIB_FIXED_SAMPLE_FREQ_IN_HZ (22050)
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#define SEND_LOOP_DEBUG (0) // For test & debug
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#define SINE_WAVE_TEST (0) // For test & debug
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typedef struct AudioCallBackUserData
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{
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uint aprs_sample_freq_in_hz;
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bool is_loop;
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} AudioCallBackUserData_t;
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audio_buffer_pool_t* init_audio(uint sample_freq_in_hz, uint16_t audio_buffer_format)
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{
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@ -65,7 +71,7 @@ audio_buffer_pool_t* init_audio(uint sample_freq_in_hz, uint16_t audio_buffer_fo
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static void init(uint sample_freq_in_hz)
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{
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// WARNING: ATTOW, the pico audio PWM lib worked only @ 22050 Hz sampling frequency and 48 MHz system clock
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// This is documented here https://github.com/raspberrypi/pico-extras
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// This is documented here: https://github.com/raspberrypi/pico-extras
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if (sample_freq_in_hz == PICO_EXTRA_AUDIO_PWM_LIB_FIXED_SAMPLE_FREQ_IN_HZ)
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{
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@ -89,15 +95,18 @@ static void init(uint sample_freq_in_hz)
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}
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static void fill_audio_buffer(audio_buffer_pool_t* audio_pool, const int16_t* pcm_data, uint num_samples)
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static void fill_audio_buffer(audio_buffer_pool_t* audio_pool, const int16_t* pcm_data,
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uint num_samples, bool is_loop_forever)
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{
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uint pos = 0u;
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const uint8_t volume = 128u;
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while (true)
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bool is_keep_going = true;
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while (is_keep_going)
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{
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audio_buffer_t* buffer = take_audio_buffer(audio_pool, true);
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int16_t* samples = (int16_t*)buffer->buffer->bytes;
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audio_buffer_t* buffer = take_audio_buffer(audio_pool, true);
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int16_t* samples = (int16_t*)buffer->buffer->bytes;
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for (uint i = 0u; i < buffer->max_sample_count; i++)
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{
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@ -106,7 +115,15 @@ static void fill_audio_buffer(audio_buffer_pool_t* audio_pool, const int16_t* pc
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if (pos == num_samples)
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{
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pos = 0u;
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if (is_loop_forever)
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{
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pos = 0u;
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}
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else
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{
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is_keep_going = false;
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break;
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}
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}
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}
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@ -138,49 +155,40 @@ static void send1kHz(uint sample_freq_in_hz)
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audio_buffer_pool_t* audio_pool = init_audio(sample_freq_in_hz, AUDIO_BUFFER_FORMAT_PCM_S16);
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while (true)
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{
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fill_audio_buffer(audio_pool, sine_wave_table, num_samples);
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}
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fill_audio_buffer(audio_pool, sine_wave_table, num_samples, true);
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free(sine_wave_table);
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}
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static void sendAPRS_audioCallback(void* user_data, int16_t* pcm_data, size_t num_samples)
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static void sendAPRS_audioCallback(void* callback_user_data, int16_t* pcm_data, size_t num_samples)
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{
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const uint aprs_sampl_freq_in_hz = *((const uint*)user_data);
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const AudioCallBackUserData_t user_data = *((const AudioCallBackUserData_t*)callback_user_data);
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audio_buffer_pool_t* audio_pool = init_audio(aprs_sampl_freq_in_hz, AUDIO_BUFFER_FORMAT_PCM_S16);
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audio_buffer_pool_t* audio_pool = init_audio(user_data.aprs_sample_freq_in_hz, AUDIO_BUFFER_FORMAT_PCM_S16);
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#if (SEND_LOOP_DEBUG == 1)
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while (true)
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{
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#endif // SEND_LOOP_DEBUG
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fill_audio_buffer(audio_pool, pcm_data, num_samples);
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#if (SEND_LOOP_DEBUG == 1)
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}
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#endif // SEND_LOOP_DEBUG
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fill_audio_buffer(audio_pool, pcm_data, num_samples, user_data.is_loop);
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}
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static void sendAPRS(const char* call_sign_src,
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const char* call_sign_dst,
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const char* aprs_path_1,
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const char* aprs_path_2,
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const char* aprs_message,
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static void sendAPRS(const char* call_sign_src,
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const char* call_sign_dst,
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const char* aprs_path_1,
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const char* aprs_path_2,
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const char* aprs_message,
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const double latitude_in_deg,
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const double longitude_in_deg,
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const double altitude_in_m)
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const double altitude_in_m,
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const bool is_loop)
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{
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// Known from the 'ax25beacon' library
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static const uint APRS_SAMPL_FREQ_IN_HZ = 48000u;
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static AudioCallBackUserData_t callback_user_data;
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init(APRS_SAMPL_FREQ_IN_HZ);
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callback_user_data.aprs_sample_freq_in_hz = 48000u; // Known from the 'ax25beacon' library
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callback_user_data.is_loop = is_loop;
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ax25_beacon((void*)&APRS_SAMPL_FREQ_IN_HZ, // User data
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init(callback_user_data.aprs_sample_freq_in_hz);
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ax25_beacon((void*)&callback_user_data,
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sendAPRS_audioCallback,
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call_sign_src,
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call_sign_dst,
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@ -210,8 +218,8 @@ int main()
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"Test message",
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10.0, // Lat in deg
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20.0, // Long in deg
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100.0 // Alt in m
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);
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100.0, // Alt in m
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false); // Loop forever
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#endif // SINE_WAVE_TEST, !SINE_WAVE_TEST
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