diff options
Diffstat (limited to 'firmware/fx2/common')
| -rw-r--r-- | firmware/fx2/common/spi.c | 95 | ||||
| -rw-r--r-- | firmware/fx2/common/spi.h | 7 | ||||
| -rw-r--r-- | firmware/fx2/common/usrp_commands.h | 7 |
3 files changed, 2 insertions, 107 deletions
diff --git a/firmware/fx2/common/spi.c b/firmware/fx2/common/spi.c index 0c4f63d5a..04a1d8477 100644 --- a/firmware/fx2/common/spi.c +++ b/firmware/fx2/common/spi.c @@ -97,18 +97,13 @@ count_bits8 (unsigned char v) static void write_byte_msb (unsigned char v); -unsigned char -transact_byte_msb (unsigned char v); - static void write_bytes_msb (const xdata unsigned char *buf, unsigned char len); static void read_bytes_msb (xdata unsigned char *buf, unsigned char len); -static void -transact_bytes_msb (xdata unsigned char *buf, unsigned char len); - + // returns non-zero if successful, else 0 unsigned char spi_read (unsigned char header_hi, unsigned char header_lo, @@ -219,93 +214,7 @@ spi_write (unsigned char header_hi, unsigned char header_lo, return 1; // success } -unsigned char -spi_transact (unsigned char data0, unsigned char data1, - unsigned char data2, unsigned char data3, - unsigned char enables, xdata unsigned char *buf, - unsigned char len) -{ - if (count_bits8 (enables) > 1) - return 0; // error, too many enables set - - if (len > 4) - return 0; - - setup_enables (enables); - - buf[0] = data0; - buf[1] = data1; - buf[2] = data2; - buf[3] = data3; - - if (len != 0) - transact_bytes_msb(buf, len); - - disable_all (); - return 1; // success -} - -static unsigned char -transact_byte_msb (unsigned char v) -{ - v = (v << 1) | (v >> 7); // rotate left (MSB into bottom bit) - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; // read into bottom bit - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - v = (v << 1) | (v >> 7); - bitS_OUT = v & 0x1; - bitS_CLK = 1; - v |= bitS_IN; - bitS_CLK = 0; - - return v; -} - -static void -transact_bytes_msb (xdata unsigned char *buf, unsigned char len) -{ - while (len-- != 0){ - *buf++ = transact_byte_msb (*buf); - } -} +// ---------------------------------------------------------------- static void write_byte_msb (unsigned char v) diff --git a/firmware/fx2/common/spi.h b/firmware/fx2/common/spi.h index 5342b82b8..12bc5e544 100644 --- a/firmware/fx2/common/spi.h +++ b/firmware/fx2/common/spi.h @@ -39,12 +39,5 @@ spi_write (unsigned char header_hi, unsigned char header_lo, unsigned char enables, unsigned char format, const xdata unsigned char *buf, unsigned char len); -// returns non-zero if successful, else 0 -unsigned char -spi_transact (unsigned char data0, unsigned char data1, - unsigned char data2, unsigned char data3, - unsigned char enables, xdata unsigned char *buf, - unsigned char len); - #endif /* INCLUDED_SPI_H */ diff --git a/firmware/fx2/common/usrp_commands.h b/firmware/fx2/common/usrp_commands.h index 02778c7e3..20c28e264 100644 --- a/firmware/fx2/common/usrp_commands.h +++ b/firmware/fx2/common/usrp_commands.h @@ -54,13 +54,6 @@ // wIndexL: format // len: how much to read -#define VRQ_SPI_TRANSACT 0x83 // wValueH: OUT byte 0 - // wValueL: OUT byte 1 - // wIndexH: OUT byte 2 - // wIndexL: OUT byte 3 - // wLengthH: enables - // wLengthL: transaction length - // OUT commands #define VRQ_SET_LED 0x01 // wValueL off/on {0,1}; wIndexL: which {0,1} |