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feat: option to use an extra GPIO as the status indicator

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This commit is contained in:
chenzhuoyu
2023-04-11 00:36:16 +08:00
parent 9e65ebb821
commit cf04d64377
4 changed files with 44 additions and 4 deletions
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src/ftdipp_mpsse.cpp
+19
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@@ -31,6 +31,7 @@ FTDIpp_MPSSE::FTDIpp_MPSSE(const cable_t &cable, const string &dev,
_verbose(verbose > 2), _cable(cable.config), _vid(0),
_pid(0), _index(0),
_bus(cable.bus_addr), _addr(cable.device_addr),
_bitmode(BITMODE_RESET),
_interface(cable.config.interface),
_clkHZ(clkHZ), _buffer_size(2*32768), _num(0)
{
@@ -96,6 +97,13 @@ FTDIpp_MPSSE::~FTDIpp_MPSSE()
{
char err[256];
int ret;
if (_bitmode == BITMODE_MPSSE) {
if (_cable.status_pin != -1) {
gpio_set(1 << _cable.status_pin);
}
}
if ((ret = ftdi_set_bitmode(_ftdi, 0, BITMODE_RESET)) < 0) {
snprintf(err, sizeof(err), "unable to config pins : %d %s",
ret, ftdi_get_error_string(_ftdi));
@@ -278,6 +286,16 @@ int FTDIpp_MPSSE::init(unsigned char latency, unsigned char bitmask_mode,
if (setClkFreq(_clkHZ) < 0)
return -1;
if (_cable.status_pin != -1) {
if (_cable.status_pin <= 7) {
_cable.bit_low_dir |= 1 << _cable.status_pin;
_cable.bit_low_val &= ~(1 << _cable.status_pin);
} else {
_cable.bit_high_dir |= 1 << (_cable.status_pin - 8);
_cable.bit_high_val &= ~(1 << (_cable.status_pin - 8));
}
}
int to_wr = 3;
buf_cmd[1] = _cable.bit_low_val; // 0xe8;
@@ -311,6 +329,7 @@ int FTDIpp_MPSSE::init(unsigned char latency, unsigned char bitmask_mode,
return -1;
}
_bitmode = mode;
return 0;
}