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openFPGALoader
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This commit is contained in:
Fabien Marteau 2019-11-08 11:30:10 +01:00
parent d99e2b6ca5
commit 8ee66a3e35
1 changed files with 14 additions and 14 deletions
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26
ftdijtag.cpp
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@ -72,7 +72,7 @@ FtdiJtag::~FtdiJtag()
SET_BITS_HIGH, 0xff, 0x00,
LOOPBACK_START,
MPSSE_DO_READ | MPSSE_READ_NEG |
MPSSE_DO_WRITE | MPSSE_WRITE_NEG | MPSSE_LSB,
MPSSE_DO_WRITE | MPSSE_WRITE_NEG | MPSSE_LSB,
0x04, 0x00,
0xaa, 0x55, 0x00, 0xff, 0xaa,
LOOPBACK_END
@ -142,7 +142,7 @@ int FtdiJtag::flushTMS(bool flush_buffer)
buf[2] = 0x80;
for (int i = 0; i < xfer; i++, pos++) {
buf[2] |=
(((_tms_buffer[pos >> 3] & (1 << (pos & 0x07))) ? 1 : 0) << i);
(((_tms_buffer[pos >> 3] & (1 << (pos & 0x07))) ? 1 : 0) << i);
}
_num_tms -= xfer;
mpsse_store(buf, 3);
@ -176,8 +176,8 @@ int FtdiJtag::read_write(unsigned char *tdi, unsigned char *tdo, int len, char l
* - last bit to send -> sent in conjunction with TMS
*/
int tx_buff_size = mpsse_get_buffer_size();
int real_len = (last) ? len - 1 : len; // if its a buffer in a big send send len
// else supress last bit -> with TMS
int real_len = (last) ? len - 1 : len; // if its a buffer in a big send send len
// else supress last bit -> with TMS
int nb_byte = real_len >> 3; // number of byte to send
int nb_bit = (real_len & 0x07); // residual bits
int xfer = tx_buff_size - 3;
@ -185,14 +185,14 @@ int FtdiJtag::read_write(unsigned char *tdi, unsigned char *tdo, int len, char l
unsigned char *tx_ptr = (unsigned char *)tdi;
unsigned char tx_buf[3] = {(unsigned char)(MPSSE_LSB | MPSSE_WRITE_NEG |
((tdi) ? MPSSE_DO_WRITE : 0) |
((tdo) ? (MPSSE_DO_READ | MPSSE_READ_NEG) : 0)),
((xfer - 1) & 0xff), // low
(((xfer - 1) >> 8) & 0xff)}; // high
((tdo) ? (MPSSE_DO_READ | MPSSE_READ_NEG) : 0)),
((xfer - 1) & 0xff), // low
(((xfer - 1) >> 8) & 0xff)}; // high
flushTMS(true);
display("%s len : %d %d %d %d\n", __func__, len, real_len, nb_byte,
nb_bit);
nb_bit);
while (nb_byte > xfer) {
mpsse_store(tx_buf, 3);
if (tdi) {
@ -210,8 +210,8 @@ int FtdiJtag::read_write(unsigned char *tdi, unsigned char *tdo, int len, char l
/* 1/ send serie of byte */
if (nb_byte > 0) {
display("%s read/write %d byte\n", __func__, nb_byte);
tx_buf[1] = ((nb_byte - 1) & 0xff); // low
tx_buf[2] = (((nb_byte - 1) >> 8) & 0xff); // high
tx_buf[1] = ((nb_byte - 1) & 0xff); // low
tx_buf[2] = (((nb_byte - 1) >> 8) & 0xff); // high
mpsse_store(tx_buf, 3);
if (tdi) {
mpsse_store(tx_ptr, nb_byte);
@ -261,9 +261,9 @@ int FtdiJtag::read_write(unsigned char *tdi, unsigned char *tdo, int len, char l
/* write the last bit in conjunction with TMS */
tx_buf[0] = MPSSE_WRITE_TMS | MPSSE_LSB | MPSSE_BITMODE | MPSSE_WRITE_NEG |
((tdo) ? MPSSE_DO_READ | MPSSE_READ_NEG : 0);
tx_buf[1] = 0x0 ; // send 1bit
tx_buf[2] = ((last_bit)?0x81:0x01); // we know in TMS tdi is bit 7
// and to move to EXIT_XR TMS = 1
tx_buf[1] = 0x0 ; // send 1bit
tx_buf[2] = ((last_bit)?0x81:0x01); // we know in TMS tdi is bit 7
// and to move to EXIT_XR TMS = 1
mpsse_store(tx_buf, 3);
mpsse_write();
if (tdo) {