Utilities to work with Fomu, as attached to a Raspberry Pi
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fomu-flash/fpga.h

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1.7 KiB

#ifndef BB_FPGA_H_
#define BB_FPGA_H_
#include <stdint.h>
struct ff_fpga;
enum fpga_pin {
FP_RESET,
FP_DONE,
FP_CS,
};
#if 0
enum spi_state {
SS_UNCONFIGURED = 0,
SS_SINGLE,
SS_DUAL_RX,
SS_DUAL_TX,
SS_QUAD_RX,
SS_QUAD_TX,
SS_HARDWARE,
};
enum spi_type {
ST_UNCONFIGURED,
ST_SINGLE,
ST_DUAL,
ST_QUAD,
ST_QPI,
};
enum spi_pin {
SP_MOSI,
SP_MISO,
SP_HOLD,
SP_WP,
SP_CS,
SP_CLK,
SP_D0,
SP_D1,
SP_D2,
SP_D3,
};
struct ff_spi;
void spiPause(struct ff_spi *spi);
void spiBegin(struct ff_spi *spi);
void spiEnd(struct ff_spi *spi);
//void spiSingleTx(struct ff_spi *spi, uint8_t out);
//uint8_t spiSingleRx(struct ff_spi *spi);
//void spiDualTx(struct ff_spi *spi, uint8_t out);
//void spiQuadTx(struct ff_spi *spi, uint8_t out);
void spiCommand(struct ff_spi *spi, uint8_t cmd);
//uint8_t spiDualRx(struct ff_spi *spi);
//uint8_t spiQuadRx(struct ff_spi *spi);
int spiTx(struct ff_spi *spi, uint8_t word);
uint8_t spiRx(struct ff_spi *spi);
uint8_t spiReadSr(struct ff_spi *spi, int sr);
void spiWriteSr(struct ff_spi *spi, int sr, uint8_t val);
int spiSetType(struct ff_spi *spi, enum spi_type type);
int spiRead(struct ff_spi *spi, uint32_t addr, uint8_t *data, unsigned int count);
//int spi_wait_for_not_busy(struct ff_spi *spi);
int spiWrite(struct ff_spi *spi, uint32_t addr, const uint8_t *data, unsigned int count);
#endif
int fpgaResetSlave(struct ff_fpga *fpga);
int fpgaResetMaster(struct ff_fpga *fpga);
int fpgaReset(struct ff_fpga *fpga);
int fpgaInit(struct ff_fpga *fpga);
int fpgaDone(struct ff_fpga *fpga);
struct ff_fpga *fpgaAlloc(void);
void fpgaSetPin(struct ff_fpga *fpga, enum fpga_pin pin, int val);
void fpgaFree(struct ff_fpga **fpga);
#endif /* BB_FPGA_H_ */