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ftdispi: cleanup

This commit is contained in:
Gwenhael Goavec-Merou 2020-10-28 21:26:33 +01:00
parent 05e1c57cc5
commit 09c28c23a7
2 changed files with 35 additions and 240 deletions
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268
src/ftdispi.cpp
View File

@ -6,7 +6,6 @@
#include <string.h>
#include "ftdipp_mpsse.hpp"
#include "ftdispi.hpp"
//#include "ftdi_handle.h"
/*
* SCLK -> ADBUS0
@ -16,11 +15,6 @@
*/
#define SPI_CLK (1 << 0)
#define cs_bits 0x08
#define pindir 0x0b
//uint8_t buffer[1024];
//int num = 0;
/* GGM: Faut aussi definir l'etat des broches par defaut */
/* necessaire en mode0 et 1, ainsi qu'entre 2 et 3
@ -59,6 +53,11 @@ void FtdiSpi::setMode(uint8_t mode)
_rd_mode = 0;
break;
}
/* for clk pin in idle state */
if (_clk)
gpio_set(SPI_CLK, true);
else
gpio_clear(SPI_CLK, true);
}
static FTDIpp_MPSSE::mpsse_bit_config bit_conf =
@ -90,218 +89,32 @@ FtdiSpi::~FtdiSpi()
{
}
#if 0
#define CLOCK 0x08
#define LATENCY 16
#define TIMEOUT 0
#define SIZE 65536
#define TX_BUFS (60000/8-3)
int ftdi_spi_init_internal(struct ftdi_spi *spi, uint32_t clk_freq_hz);
int ftdi_spi_init_by_name(struct ftdi_spi *spi, char *devname,
uint8_t interface, uint32_t clk_freq_hz)
{
spi->ftdic = open_device_by_name(devname, interface, 115200);
if (spi->ftdic == NULL) {
printf("opening error\n");
return EXIT_FAILURE;
}
return ftdi_spi_init_internal(spi, clk_freq_hz);
}
int ftdi_spi_init(struct ftdi_spi *spi, uint32_t vid, uint32_t pid,
uint8_t interface, uint32_t clk_freq_hz)
{
spi->ftdic = open_device(vid, pid, interface, 115200);
if (spi->ftdic == NULL) {
printf("opening error\n");
return EXIT_FAILURE;
}
return ftdi_spi_init_internal(spi, clk_freq_hz);
}
#endif
#if 0
int ftdi_spi_init_internal(struct ftdi_spi *spi, uint32_t clock_freq_hz)
{
setCSmode(spi, SPI_CS_AUTO);
setEndianness(spi, SPI_MSB_FIRST);
spi->tx_buff = (uint8_t *)malloc(sizeof(uint8_t) * TX_BUFS);
if (ftdi_usb_reset(spi->ftdic) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_usb_purge_rx_buffer(spi->ftdic) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_usb_purge_tx_buffer(spi->ftdic) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_read_data_set_chunksize(spi->ftdic, SIZE) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_write_data_set_chunksize(spi->ftdic, SIZE) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_set_latency_timer(spi->ftdic, LATENCY) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_set_event_char(spi->ftdic, 0x00, 0) != 0) {
printf("reset error\n");
return -1;
}
if (ftdi_set_error_char(spi->ftdic, 0x00, 0) != 0) {
printf("reset error\n");
return -1;
}
// set the read timeouts in ms for the ft2232H
spi->ftdic->usb_read_timeout = TIMEOUT;
// set the write timeouts in ms for the ft2232H
spi->ftdic->usb_write_timeout = 5000;
if (ftdi_set_bitmode(spi->ftdic, 0x00, 0x00) != 0) { // reset controller
printf("reset error\n");
return -1;
}
if (ftdi_set_bitmode(spi->ftdic, 0x00, 0x02) != 0) { // enable mpsse mode
printf("reset error\n");
return -1;
}
if (ftdi_setClock(spi->ftdic, /*0x08,*/ clock_freq_hz) < 0)
return -1;
spi->tx_size = 0;
spi->tx_buff[spi->tx_size++] = 0x97; // disable adaptive clocking
// devrait etre 8C pour enable et non 8D
spi->tx_buff[spi->tx_size++] = 0x8d; //disable tri phase data clocking
if (ftdi_write_data(spi->ftdic, spi->tx_buff, spi->tx_size) != spi->tx_size) {
printf("write error for dis clock, adaptive, tri phase\n");
return -1;
}
spi->tx_size = 0;
spi->tx_buff[spi->tx_size++] = 0x85; // disable loopback
if (ftdi_write_data(spi->ftdic, spi->tx_buff, spi->tx_size) != spi->tx_size) {
printf("disable loopback error\n");
return -1;
}
spi->tx_size = 0;
spi->tx_buff[spi->tx_size++] = 0x80;
spi->tx_buff[spi->tx_size++] = 0x08;
spi->tx_buff[spi->tx_size++] = 0x0B;
if (ftdi_write_data(spi->ftdic, spi->tx_buff, spi->tx_size) != spi->tx_size) {
printf("write set bit error\n");
return -1;
}
spi->tx_size = 0;
return 0;
}
#endif
//FtdiSpi::~FtdiSpi()
//int ftdi_spi_close(struct ftdi_spi *spi)
//{
//struct ftdi_context *ftdic = spi->ftdic;
//free(spi->tx_buff);
//return close_device(ftdic);
//}
// mpsse_write
/*static int send_buf(struct ftdi_context *ftdic, const unsigned char *buf,
int size)
{
int r;
r = ftdi_write_data(ftdic, (unsigned char *)buf, size);
if (r < 0) {
printf("ftdi_write_data: %d, %s\n", r,
ftdi_get_error_string(ftdic));
return 1;
}
return 0;
}
static int ft_flush_buffer(struct ftdi_spi *spi)
{
int ret = 0;
if (spi->tx_size != 0) {
ret = send_buf(spi->ftdic, spi->tx_buff, spi->tx_size);
spi->tx_size = 0;
}
return ret;
}*/
// mpsse_store
/*static int ft_store_char(struct ftdi_spi *spi, uint8_t c)
{
int ret = 0;
if (spi->tx_size == TX_BUFS)
ret = ft_flush_buffer(spi);
spi->tx_buff[spi->tx_size] = c;
spi->tx_size++;
return ret;
}
static int ft_store_star_char(struct ftdi_spi *spi, uint8_t *buff, int len)
{
int ret = 0;
if (spi->tx_size + len + 1 == TX_BUFS)
ret = ft_flush_buffer(spi);
memcpy(spi->tx_buff + spi->tx_size, buff, len);
spi->tx_size += len;
return ret;
}*/
// mpsse read
/*static int get_buf(struct ftdi_spi *spi, const unsigned char *buf,
int size)
{
int r;
ft_store_char(spi, SEND_IMMEDIATE);
ft_flush_buffer(spi);
while (size > 0) {
r = ftdi_read_data(spi->ftdic, (unsigned char *)buf, size);
if (r < 0) {
printf("ftdi_read_data: %d, %s\n", r,
ftdi_get_error_string(spi->ftdic));
return 1;
}
buf += r;
size -= r;
}
return 0;
}*/
/* send two consecutive cs configuration */
void FtdiSpi::confCs(char stat)
bool FtdiSpi::confCs(char stat)
{
uint8_t tx_buf[6] = {SET_BITS_LOW, _clk, pindir,
SET_BITS_LOW, _clk, pindir};
tx_buf[1] |= (stat) ? cs_bits : 0;
tx_buf[4] |= (stat) ? cs_bits : 0;
if (mpsse_store(tx_buf, 6) != 0)
printf("error\n");
bool ret;
if (stat == 0) {
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);
}
if (!ret)
printf("Error: CS update\n");
return ret;
}
void FtdiSpi::setCs()
bool FtdiSpi::setCs()
{
_cs = cs_bits;
confCs(_cs);
return confCs(_cs);
}
void FtdiSpi::clearCs()
bool FtdiSpi::clearCs()
{
_cs = 0x00;
confCs(_cs);
return confCs(_cs);
}
int FtdiSpi::ft2232_spi_wr_then_rd(
@ -330,10 +143,8 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
const uint8_t * writearr, uint8_t * readarr)
{
#define TX_BUF (60000/8-3)
//struct ftdi_context *ftdic = spi->ftdic;
uint8_t buf[TX_BUF+3];//65536+9];
/* failed is special. We use bitwise ops, but it is essentially bool. */
int i = 0, failed = 0;
int i = 0;
int ret = 0;
uint8_t *rx_ptr = readarr;
@ -342,11 +153,7 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
uint32_t xfer;
if (_cs_mode == SPI_CS_AUTO) {
buf[i++] = SET_BITS_LOW;
buf[i++] = (0 & ~cs_bits) | _clk; /* assertive */
buf[i++] = pindir;
mpsse_store(buf, i);
i=0;
clearCs();
}
mpsse_write();
@ -359,10 +166,8 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
while (len > 0) {
xfer = (len > TX_BUF) ? TX_BUF: len;
buf[i++] = /*(spi->endian == SPI_MSB_FIRST) ? 0 : MPSSE_LSB |*/
((readarr) ? (MPSSE_DO_READ | _rd_mode) : 0) |
((writearr) ? (MPSSE_DO_WRITE | _wr_mode) : 0);// |
/*MPSSE_DO_WRITE |*/// spi->wr_mode | spi->rd_mode;
buf[i++] = ((readarr) ? (MPSSE_DO_READ | _rd_mode) : 0) |
((writearr) ? (MPSSE_DO_WRITE | _wr_mode) : 0);
buf[i++] = (xfer - 1) & 0xff;
buf[i++] = ((xfer - 1) >> 8) & 0xff;
if (writearr) {
@ -372,22 +177,19 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
}
ret = mpsse_store(buf, i);
failed = ret;
if (ret)
printf("send_buf failed before read: %i %s\n", ret, "plop");// ftdi_get_error_string(ftdic));
printf("send_buf failed before read: %i %s\n", ret, ftdi_get_error_string(_ftdi));
i = 0;
if (readarr) {
//if (ret == 0) {
ret = mpsse_read(rx_ptr, xfer);
failed = ret;
if (ret != xfer)
if ((uint32_t)ret != xfer)
printf("get_buf failed: %i\n", ret);
//}
rx_ptr += xfer;
} else {
ret = mpsse_write();
failed = ret;
if (ret != xfer+3)
if ((uint32_t)ret != xfer+3)
printf("error %d %d\n", ret, i);
}
len -= xfer;
@ -395,18 +197,11 @@ int FtdiSpi::ft2232_spi_wr_and_rd(//struct ftdi_spi *spi,
}
if (_cs_mode == SPI_CS_AUTO) {
buf[i++] = SET_BITS_LOW;
buf[i++] = cs_bits | _clk;
buf[i++] = pindir;
ret = mpsse_store(buf, i);
failed |= ret;
if (ret)
printf("send_buf failed at end: %i\n", ret);
if (3 != mpsse_write())
printf("send_buf failed at write\n");
if (!setCs())
printf("send_buf failed at write %d\n", ret);
}
return 0;//failed ? -1 : 0;
return 0;
}
/* method spiInterface::spi_put */
@ -444,7 +239,6 @@ int FtdiSpi::spi_wait(uint8_t cmd, uint8_t mask, uint8_t cond,
uint32_t timeout, bool verbose)
{
uint8_t rx;
uint8_t dummy[2];
uint32_t count = 0;
setCSmode(SPI_CS_MANUAL);

7
src/ftdispi.hpp
View File

@ -28,10 +28,11 @@ class FtdiSpi : public FTDIpp_MPSSE, SPIInterface {
_endian =(endian == SPI_MSB_FIRST) ? 0 : MPSSE_LSB;
}
/* CS handling */
void setCSmode(uint8_t cs_mode) {_cs_mode = cs_mode;}
void confCs(char stat);
void setCs();
void clearCs();
bool confCs(char stat);
bool setCs();
bool clearCs();
int ft2232_spi_wr_then_rd(const uint8_t *tx_data, uint32_t tx_len,
uint8_t *rx_data, uint32_t rx_len);