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openFPGALoader
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ftdispi: improve write/read

This commit is contained in:
Gwenhael Goavec-Merou 2021-06-26 08:06:26 +02:00
parent d32b81037a
commit b92a9adca7
1 changed files with 3 additions and 3 deletions
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6
src/ftdispi.cpp
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@ -161,8 +161,8 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
uint32_t writecnt,
const uint8_t * writearr, uint8_t * readarr)
{
#define TX_BUF (60000/8-3)
uint8_t buf[TX_BUF+3];//65536+9];
uint32_t max_xfer = (readarr) ? _buffer_size : 4096;
uint8_t buf[max_xfer];
int i = 0;
int ret = 0;
@ -183,7 +183,7 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
* operations.
*/
while (len > 0) {
xfer = (len > TX_BUF) ? TX_BUF: len;
xfer = (len > max_xfer) ? max_xfer : len;
buf[i++] = ((readarr) ? (MPSSE_DO_READ | _rd_mode) : 0) |
((writearr) ? (MPSSE_DO_WRITE | _wr_mode) : 0);