SPMA084 December 2021 TM4C1230C3PM , TM4C1230C3PM , TM4C1230D5PM , TM4C1230D5PM , TM4C1230E6PM , TM4C1230E6PM , TM4C1230H6PM , TM4C1230H6PM , TM4C1231C3PM , TM4C1231C3PM , TM4C1231D5PM , TM4C1231D5PM , TM4C1231D5PZ , TM4C1231D5PZ , TM4C1231E6PM , TM4C1231E6PM , TM4C1231E6PZ , TM4C1231E6PZ , TM4C1231H6PGE , TM4C1231H6PGE , TM4C1231H6PM , TM4C1231H6PM , TM4C1231H6PZ , TM4C1231H6PZ , TM4C1232C3PM , TM4C1232C3PM , TM4C1232D5PM , TM4C1232D5PM , TM4C1232E6PM , TM4C1232E6PM , TM4C1232H6PM , TM4C1232H6PM , TM4C1233C3PM , TM4C1233C3PM , TM4C1233D5PM , TM4C1233D5PM , TM4C1233D5PZ , TM4C1233D5PZ , TM4C1233E6PM , TM4C1233E6PM , TM4C1233E6PZ , TM4C1233E6PZ , TM4C1233H6PGE , TM4C1233H6PGE , TM4C1233H6PM , TM4C1233H6PM , TM4C1233H6PZ , TM4C1233H6PZ , TM4C1236D5PM , TM4C1236D5PM , TM4C1236E6PM , TM4C1236E6PM , TM4C1236H6PM , TM4C1236H6PM , TM4C1237D5PM , TM4C1237D5PM , TM4C1237D5PZ , TM4C1237D5PZ , TM4C1237E6PM , TM4C1237E6PM , TM4C1237E6PZ , TM4C1237E6PZ , TM4C1237H6PGE , TM4C1237H6PGE , TM4C1237H6PM , TM4C1237H6PM , TM4C1237H6PZ , TM4C1237H6PZ , TM4C123AE6PM , TM4C123AE6PM , TM4C123AH6PM , TM4C123AH6PM , TM4C123BE6PM , TM4C123BE6PM , TM4C123BE6PZ , TM4C123BE6PZ , TM4C123BH6PGE , TM4C123BH6PGE , TM4C123BH6PM , TM4C123BH6PM , TM4C123BH6PZ , TM4C123BH6PZ , TM4C123BH6ZRB , TM4C123BH6ZRB , TM4C123FE6PM , TM4C123FE6PM , TM4C123FH6PM , TM4C123FH6PM , TM4C123GE6PM , TM4C123GE6PM , TM4C123GE6PZ , TM4C123GE6PZ , TM4C123GH6PGE , TM4C123GH6PGE , TM4C123GH6PM , TM4C123GH6PM , TM4C123GH6PZ , TM4C123GH6PZ , TM4C123GH6ZRB , TM4C123GH6ZRB , TM4C1290NCPDT , TM4C1290NCPDT , TM4C1290NCZAD , TM4C1290NCZAD , TM4C1292NCPDT , TM4C1292NCPDT , TM4C1292NCZAD , TM4C1292NCZAD , TM4C1294KCPDT , TM4C1294KCPDT , TM4C1294NCPDT , TM4C1294NCPDT , TM4C1294NCZAD , TM4C1294NCZAD , TM4C1297NCZAD , TM4C1297NCZAD , TM4C1299KCZAD , TM4C1299KCZAD , TM4C1299NCZAD , TM4C1299NCZAD , TM4C129CNCPDT , TM4C129CNCPDT , TM4C129CNCZAD , TM4C129CNCZAD , TM4C129DNCPDT , TM4C129DNCPDT , TM4C129DNCZAD , TM4C129DNCZAD , TM4C129EKCPDT , TM4C129EKCPDT , TM4C129ENCPDT , TM4C129ENCPDT , TM4C129ENCZAD , TM4C129ENCZAD , TM4C129LNCZAD , TM4C129LNCZAD , TM4C129XKCZAD , TM4C129XKCZAD , TM4C129XNCZAD , TM4C129XNCZAD
A collection of eight examples are presented in Table 6-1 to demonstrate running the audio playback applications on different develop boards using either PWM DAC or SPI DAC methods.
| Example | Board | Description |
|---|---|---|
| audio_playback_with_ sdcard_by_PWM | DK-TM4C129x | This example application demonstrates playing .wav files
from an SD card that is formatted with a FAT file system. The
application can browse the file system on the SD card and displays
all files that are found on the LCD display. Files can be selected
to show their format and then played if the application determines
that they are a valid .wav file. Only PCM format
(uncompressed) files may be played. This example creates an audio signal to an external speaker on BOOSTXL-AUDIO BoosterPack using PWM DAC method. MCU's PWM output passes through a basic R/C filter on the BoosterPack creates a simple, low-cost analog audio signal. |
| audio_playback_with_sdcard_by_SPIDAC | DK-TM4C129x | Similar to the above examples where .wav files are stored on the SD card; this example creates an audio signal to an external speaker on BOOSTXL-AUDO BoosterPack by sending the audio data stored in .wav file to a DAC on the BoosterPack through a SPI interface. |
| audio_playback_internal_wavefile_by_PWM | DK-TM4C129x | This example application demonstrates playing a .wav audio
format stored internally on the flash memory. Several example
.wav files can be selected during compile time by using
the #define DEMO directive. Various preloaded .wav files digitized
in different sampling rates (8 kHz, 16 kHz, 22.05 kHz, 41.1 kHz and
48 kHz) and resolutions (8 bit and 16 bit) can be selected. Only PCM
format (uncompressed) wav files may be played.. This example creates an audio signal to an external speaker on BOOSTXL-AUDIO BoosterPack using PWM method. MCU's PWM output passes through a basic R/C filter on the BoosterPack creates a simple, low-cost analog audio signal. |
| audio_playback_internal_wavefile_by_SPIDAC | DK-TM4C129x | Similar to the above example but sends the audio data stored on the flash to a DAC on the BoosterPack through a SPI interface. |
| audio_playback_internal_wavefile_by_PWM_EKTM4C129 | EK-TM4C1294XL | Similar to audio_playback_internal_wavefile_by_PWM example but for EK-TM4C1294XL LaunchPad. |
| audio_playback_internal_wavefile_by_SPIDAC_EKTM4C129 | EK-TM4C1294XL | Similar to audio_playback_internal_wavefile_by_SPIDAC example but for EK-TM4C1294XL LaunchPad. |
| audio_playback_internal_wavefile_by_PWM_EKTM4C123 | EK-TM4C123GXL | Similar to audio_playback_internal_wavefile_by_PWM example but for EK-TM4C123GXL LaunchPad. |
| audio_playback_internal_wavefile_by_SPIDAC_EKTM4C123 | EK-TM4C123GXL | Similar to audio_playback_internal_wavefile_by_SPIDAC example but for EK- TM4C123GXL LaunchPad. |