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openFPGALoader
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ftdispi: start to use spi_pins_conf

This commit is contained in:
Gwenhael Goavec-Merou 2020-10-30 08:24:45 +01:00
parent e347d2afd6
commit b2abafa76d
3 changed files with 42 additions and 19 deletions
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53
src/ftdispi.cpp
View File

@ -4,6 +4,7 @@
#include <ftdi.h>
#include <unistd.h>
#include <string.h>
#include "board.hpp"
#include "ftdipp_mpsse.hpp"
#include "ftdispi.hpp"
@ -13,8 +14,6 @@
* MISO -> ADBUS2
* CS -> ADBUS3
*/
#define SPI_CLK (1 << 0)
#define cs_bits 0x08
/* GGM: Faut aussi definir l'etat des broches par defaut */
/* necessaire en mode0 et 1, ainsi qu'entre 2 et 3
@ -33,31 +32,31 @@ void FtdiSpi::setMode(uint8_t mode)
{
switch (mode) {
case 0:
_clk = 0;
_clk_idle = 0;
_wr_mode = MPSSE_WRITE_NEG;
_rd_mode = 0;
break;
case 1:
_clk = 0;
_clk_idle = 0;
_wr_mode = 0;
_rd_mode = MPSSE_READ_NEG;
break;
case 2:
_clk = SPI_CLK;
_clk_idle = _clk;
_wr_mode = 0; //POS
_rd_mode = MPSSE_READ_NEG;
break;
case 3:
_clk = SPI_CLK;
_clk_idle = _clk;
_wr_mode = MPSSE_WRITE_NEG;
_rd_mode = 0;
break;
}
/* for clk pin in idle state */
if (_clk)
gpio_set(SPI_CLK, true);
if (_clk_idle)
gpio_set(_clk, true);
else
gpio_clear(SPI_CLK, true);
gpio_clear(_clk, true);
}
static FTDIpp_MPSSE::mpsse_bit_config bit_conf =
@ -74,10 +73,30 @@ FtdiSpi::FtdiSpi(int vid, int pid, unsigned char interface, uint32_t clkHZ,
init(1, 0x00, BITMODE_MPSSE);
}
FtdiSpi::FtdiSpi(const FTDIpp_MPSSE::mpsse_bit_config &conf, uint32_t clkHZ,
bool verbose):
FTDIpp_MPSSE(conf, "", "", clkHZ, verbose)
FtdiSpi::FtdiSpi(const FTDIpp_MPSSE::mpsse_bit_config &conf,
spi_pins_conf_t spi_config,
uint32_t clkHZ, bool verbose):
FTDIpp_MPSSE(conf, "", "", clkHZ, verbose),
_cs_bits(1 << 3), _clk(1 << 0)
{
/* if cs not provided use pin 4 */
/*if (_cs == 0)
_cs = (1<<4);
_cable.low_dir |= _cs;*/
printf("cs pin : %d\n", spi_config.cs_pin);
if (spi_config.cs_pin)
_cs_bits = spi_config.cs_pin;
if (spi_config.sck_pin)
_clk = spi_config.sck_pin;
/* clk is fixed by MPSSE engine
* but CS is free -> update bit direction
*/
gpio_set_output(_cs_bits, true);
gpio_set(_cs_bits, true);
setMode(0);
setCSmode(SPI_CS_AUTO);
setEndianness(SPI_MSB_FIRST);
@ -94,11 +113,11 @@ bool FtdiSpi::confCs(char stat)
{
bool ret;
if (stat == 0) {
ret = gpio_clear(cs_bits, true);
ret |= gpio_clear(cs_bits, true);
ret = gpio_clear(_cs_bits, true);
ret |= gpio_clear(_cs_bits, true);
} else {
ret = gpio_set(cs_bits, true);
ret |= gpio_set(cs_bits, true);
ret = gpio_set(_cs_bits, true);
ret |= gpio_set(_cs_bits, true);
}
if (!ret)
printf("Error: CS update\n");
@ -107,7 +126,7 @@ bool FtdiSpi::confCs(char stat)
bool FtdiSpi::setCs()
{
_cs = cs_bits;
_cs = _cs_bits;
return confCs(_cs);
}

6
src/ftdispi.hpp
View File

@ -2,6 +2,7 @@
#include <iostream>
#include <vector>
#include "board.hpp"
#include "ftdipp_mpsse.hpp"
#include "spiInterface.hpp"
@ -19,7 +20,8 @@ class FtdiSpi : public FTDIpp_MPSSE, SPIInterface {
FtdiSpi(int vid, int pid, unsigned char interface, uint32_t clkHZ,
bool verbose);
FtdiSpi(const FTDIpp_MPSSE::mpsse_bit_config &conf, uint32_t clkHZ,
FtdiSpi(const FTDIpp_MPSSE::mpsse_bit_config &conf,
spi_pins_conf_t spi_config, uint32_t clkHZ,
bool verbose);
~FtdiSpi();
@ -48,7 +50,9 @@ class FtdiSpi : public FTDIpp_MPSSE, SPIInterface {
private:
uint8_t _cs;
uint8_t _cs_bits;
uint8_t _clk;
uint8_t _clk_idle;
uint8_t _wr_mode;
uint8_t _rd_mode;
unsigned char _endian;

2
src/main.cpp
View File

@ -147,7 +147,7 @@ int main(int argc, char **argv)
RawParser *bit = NULL;
try {
spi = new FtdiSpi(cable.config, args.freq, args.verbose);
spi = new FtdiSpi(cable.config, {}, args.freq, args.verbose);
} catch (std::exception &e) {
printError("Error: Failed to claim cable");
return EXIT_FAILURE;