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CHG: the AT91C_BASE_PMC->PMC_PCER has a tendecy to be clear when set with "=", but my tickstimer also needs it, so I made it optional now.

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iceman1001 2016-10-20 00:40:24 +02:00
parent 49065576ad
commit f0a96745d0
2 changed files with 9 additions and 4 deletions
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11
armsrc/fpgaloader.c
View file

@ -117,7 +117,7 @@ void SetupSpi(int mode)
// Set up the synchronous serial port, with the one set of options that we // Set up the synchronous serial port, with the one set of options that we
// always use when we are talking to the FPGA. Both RX and TX are enabled. // always use when we are talking to the FPGA. Both RX and TX are enabled.
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
void FpgaSetupSsc(void) { void FpgaSetupSscExt(uint8_t clearPCER) {
// First configure the GPIOs, and get ourselves a clock. // First configure the GPIOs, and get ourselves a clock.
AT91C_BASE_PIOA->PIO_ASR = AT91C_BASE_PIOA->PIO_ASR =
GPIO_SSC_FRAME | GPIO_SSC_FRAME |
@ -126,7 +126,10 @@ void FpgaSetupSsc(void) {
GPIO_SSC_CLK; GPIO_SSC_CLK;
AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT; AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
AT91C_BASE_PMC->PMC_PCER |= (1 << AT91C_ID_SSC); if ( clearPCER )
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SSC);
else
AT91C_BASE_PMC->PMC_PCER |= (1 << AT91C_ID_SSC);
// Now set up the SSC proper, starting from a known state. // Now set up the SSC proper, starting from a known state.
AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
@ -148,7 +151,9 @@ void FpgaSetupSsc(void) {
AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN; AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN;
} }
void FpgaSetupSsc(void) {
FpgaSetupSscExt(TRUE);
}
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
// Set up DMA to receive samples from the FPGA. We will use the PDC, with // Set up DMA to receive samples from the FPGA. We will use the PDC, with
// a single buffer as a circular buffer (so that we just chain back to // a single buffer as a circular buffer (so that we just chain back to

2
armsrc/fpgaloader.h
View file

@ -14,6 +14,7 @@ void FpgaSendCommand(uint16_t cmd, uint16_t v);
void FpgaWriteConfWord(uint8_t v); void FpgaWriteConfWord(uint8_t v);
void FpgaDownloadAndGo(int bitstream_version); void FpgaDownloadAndGo(int bitstream_version);
void FpgaGatherVersion(int bitstream_version, char *dst, int len); void FpgaGatherVersion(int bitstream_version, char *dst, int len);
void FpgaSetupSscExt(uint8_t clearPCER);
void FpgaSetupSsc(void); void FpgaSetupSsc(void);
void SetupSpi(int mode); void SetupSpi(int mode);
bool FpgaSetupSscDma(uint8_t *buf, int len); bool FpgaSetupSscDma(uint8_t *buf, int len);
@ -28,7 +29,6 @@ void SetAdcMuxFor(uint32_t whichGpio);
#define FPGA_BITSTREAM_LF 1 #define FPGA_BITSTREAM_LF 1
#define FPGA_BITSTREAM_HF 2 #define FPGA_BITSTREAM_HF 2
// Definitions for the FPGA commands. // Definitions for the FPGA commands.
#define FPGA_CMD_SET_CONFREG (1<<12) #define FPGA_CMD_SET_CONFREG (1<<12)
#define FPGA_CMD_SET_DIVISOR (2<<12) #define FPGA_CMD_SET_DIVISOR (2<<12)