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Reworked KFile read

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Mark Qvist 2014-04-04 08:45:27 +02:00
parent d35f134128
commit 50f11f6645
3 changed files with 35 additions and 20 deletions
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27
Modem/afsk.h
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@ -71,21 +71,36 @@ typedef struct Afsk
} Afsk;
// Explanation nessecary for this. BertOS uses an
// object-oriented approach for handling "file-like"
// transactions (yes, we are using C :P). What we are
// doing here is defining a specific "file type" for
// the standard KFile to identify the modem as a "file"
// that can be read from and written to.
#define KFT_AFSK MAKE_ID('F', 'S', 'K', 'M')
INLINE Afsk *AFSK_CAST(KFile *fd)
{
// We then make a macro that can "typecast" a generic
// KFile file-pointer to an Afsk "object". This lets
// other pieces of code read from and write to the AFSK
// "objects" buffers with the standard KFile operations.
// If this seems weird and confusing, check out the
// BertOS KFile explanation at:
// http://www.bertos.org/use/tutorial-front-page/drivers-kfile-interface
INLINE Afsk *AFSK_CAST(KFile *fd) {
// We need to assert that the what we are trying
// to read/write is actually an AFSK "object",
// identified by the KFT_AFSK constant
ASSERT(fd->_type == KFT_AFSK);
return (Afsk *)fd;
}
// Declare ISRs and initialization functions
void afsk_adc_isr(Afsk *af, int8_t sample);
uint8_t afsk_dac_isr(Afsk *af);
void afsk_init(Afsk *af, int adc_ch, int dac_ch);
int afsk_testSetup(void);
int afsk_testRun(void);
int afsk_testTearDown(void);
//int afsk_testSetup(void);
//int afsk_testRun(void);
//int afsk_testTearDown(void);
#endif