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Comment:Widen CICREG for safety with current bit depth computed at exactly 16 bits. Note that this reduced the per-interrupt time from 3.33 to 3.02 us in the fast case.
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SHA1: 8a4059fa2fcbc7e7167cafc152fe5858df8a6510
User & Date: rberteig 2015-07-17 18:00:05
Context
2015-07-21
22:54
Get the manifest into the project. Leaf check-in: de135a2a11 user: rberteig tags: better-CIC
2015-07-17
18:00
Widen CICREG for safety with current bit depth computed at exactly 16 bits. Note that this reduced the per-interrupt time from 3.33 to 3.02 us in the fast case. check-in: 8a4059fa2f user: rberteig tags: better-CIC
17:34
Move definitions for the EEK pin and hobby servo pulse pin to slpear.h where they belong. Correct implementation of pdmspi_pulse() for 500 kHz MCLK. check-in: 5a7ff9e994 user: rberteig tags: better-CIC
Changes
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Changes to LPCWorkspace/PDMSPL/src/pdmspi.c.

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};
uint8_t TESTSHIFT=3;
#define TESTMASK (((sizeof testsamples) / (sizeof testsamples[0]))-1)
#endif

/* CIC filter state */
#define CIC2_R 8
#ifdef TWOSTEPCIC
typedef int16_t CICREG;
#else
typedef int32_t CICREG;
#endif
CICREG s2_sum1 = 0;
CICREG s2_comb1_1 = 0;
CICREG s2_comb1_2 = 0;
CICREG s2_sum2 = 0;
CICREG s2_comb2_1 = 0;
CICREG s2_comb2_2 = 0;
CICREG s2_sum3 = 0;








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};
uint8_t TESTSHIFT=3;
#define TESTMASK (((sizeof testsamples) / (sizeof testsamples[0]))-1)
#endif

/* CIC filter state */
#define CIC2_R 8



typedef int32_t CICREG;

CICREG s2_sum1 = 0;
CICREG s2_comb1_1 = 0;
CICREG s2_comb1_2 = 0;
CICREG s2_sum2 = 0;
CICREG s2_comb2_1 = 0;
CICREG s2_comb2_2 = 0;
CICREG s2_sum3 = 0;
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