A version of the mbed waveplayer, but setup for the mbed application board PWM speaker and audio out jack
Dependents: AppBoard_Waveplayer mbed_blinky LED_effects_w_sound ECE4180Lab3_RTOS ... more
Fork of wave_player by
Diff: wave_player.h
- Revision:
- 0:62c18ade9a60
- Child:
- 1:acc3e18e77ad
diff -r 000000000000 -r 62c18ade9a60 wave_player.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wave_player.h Tue Jan 18 03:41:02 2011 +0000 @@ -0,0 +1,67 @@ +#include <mbed.h> + +typedef struct uFMT_STRUCT { + short comp_code; + short num_channels; + unsigned sample_rate; + unsigned avg_Bps; + short block_align; + short sig_bps; +} FMT_STRUCT; + +/** wave file player class, taking a pointer to an AnalogOut object. + * + * Example: + * @code + * int main() { + * FILE *wave_file; + * + * printf("\n\n\nHello, wave world!\n"); + * wave_file=fopen("/sd/44_8_st.wav","r"); + * waver.play(wave_file); + * fclose(wave_file); + * } + * @endcode + */ +class wave_player { + +public: +/** Create a wave player using a pointer to the given AnalogOut object. + * + * @param dac AnalogOut object to which the samples are sent. + */ +wave_player(AnalogOut *_dac); + +/** the player function. + * + * @param wavefile A pointer to an opened wave file + */ +void play(FILE *wavefile); + +/** Set the printf verbosity of the wave player. A nonzero verbosity level + * will put wave_player in a mode where the complete contents of the wave + * file are echoed to the screen, including header values, and including + * all of the sample values placed into the DAC FIFO, and the sample values + * removed from the DAC FIFO by the ISR. The sample output frequency is + * fixed at 2 Hz in this mode, so it's all very slow and the DAC output isn't + * very useful, but it lets you see what's going on and may help for debugging + * wave files that don't play correctly. + * + * @param v the verbosity level + */ +void set_verbosity(int v); + +private: +void dac_out(void); +int verbosity; +AnalogOut *wave_DAC; +Ticker tick; +unsigned short DAC_fifo[256]; +short DAC_wptr; +volatile short DAC_rptr; +short DAC_on; +}; + +//void play_wave(FILE *wavefile,AnalogOut *dac); +//void dac_out(); +