Signed-off-by: Anatolij Gustschin , diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig, + depends on USB_FT232H_INTF || COMPILE_TEST, + FT232H supports SPI in MPSSE mode. + priv->xfer_buf, stride + 3, 1); + ret = ops->write_data(priv->intf, priv->xfer_buf, stride + 3); + dev_err(dev, "%s: xfer failed %d\n", __func__, ret); + dev_dbg(dev, "%s: WR %zu byte(s), TXRX CMD 0x%02x\n". + dev_err(dev, "IO cfg failed: %d\n", ret); + dev_dbg(dev, "%s: mode 0x%x, CMD RX/TX 0x%x/0x%x\n". When I use Write-Read Byte Array Demo.vi downloaded on ftdi site, i can't read back the data i send. Using the FTDI FT232H chip this breakout provides a USB to serial UART with a special 'Multi-Protocol Synchronous Serial Engine' (MPSSE) that can talk many serial protocols such as SPI, I2C, serial UART, JTAG, and more! A separate page has been created where the LibMPSSE library can be downloaded, along with examples and release notes. + struct ftdi_spi *priv = spi_controller_get_devdata(master); + const struct mpsse_spi_platform_data *pd; + data = pd->spi_info[dev_idx].platform_data; + if (!data || data->magic != FTDI_MPSSE_IO_DESC_MAGIC). endobj MPSSE is beside bit-bang-mode by far the most interesting feature of those FT2232/4232, but I could not find a single example using that mode beside the examples from FTDI … they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. + stride = min_t(size_t, remaining, sizeof(priv->xfer_buf) - 3); + ret = ftdi_spi_push_buf(priv, priv->xfer_buf, stride + 3); + dev_dbg(&priv->pdev->dev, "%s: tx failed %d\n". Supporting the USB 2.0 Hi-Speed (480Mb/s) standard, the USB to MPSSE Cables from FTDI can be used to communicate with various synchronous serial interfaces, such as JTAG, SPI, or I 2 C. The MPSSE enables designers to implement proprietary synchronous serial bus protocols. Author Topic: FTDI 2232H in MPSSE-SPI mode. FTDI's USB 2.0 Hi-Speed to MPSSE SPI module is a small electronic circuit board utilizing the FT232H. This VI configures the FTDI MPSSE for SPI protocol. + struct gpiod_lookup_table *lookup[FTDI_MPSSE_GPIOS]; +static void ftdi_spi_set_cs(struct spi_device *spi, bool enable). endobj Unlike libMPSSE-.Net-Wrapper it is not based on libMPSSE. + ret = priv->iops->write_data(priv->intf, buf, bytesleft); +static int ftdi_spi_tx(struct ftdi_spi *priv, struct spi_transfer *xfer). + max_cs = pd->spi_info[i].chip_select; + dev_err(dev, "Invalid max CS in platform data: %u\n", max_cs); + dev_dbg(dev, "CS count %u, max CS %u\n", num_cs, max_cs); + master = spi_alloc_master(&pdev->dev, sizeof(*priv)); + priv = spi_controller_get_devdata(master); + priv->intf = to_usb_interface(dev->parent); + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP |. You can rate examples to help us improve the quality of examples. I have now move away from ftdi. + devm_kfree(&pdev->dev, (void *)lookup->dev_id); + dev_dbg(&pdev->dev, "con_id: '%s' idx: %d, flags: 0x%x\n". Works over the default FTDI drivers (D2XX plus its.net wrapper FTD2XX_NET). If you post the code that you have written so far and explain what you are trying to do in a bit more detail then i … + dev_dbg(dev, "%s: CMD 0x%02x, len %u\n". + struct ftdi_spi *priv = spi_controller_get_devdata(spi->master); + dev_dbg(&priv->pdev->dev, "%s: CS %u, cs mode %d, val %d\n". Multi-Protocol Synchronous Serial Engine (MPSSE) - Some FTDI chips support MPSSE, which can send SPI (or I2C or other) protocols without you having to worry about bit-banging pins. Maximum output of 200mA @ 3.3VDC on VCCThis is accomplished by the MPSSE within the FT232H device which has the ability to emulate synchronous serial protocols while hand Using C# to control individual pin states of FTDI USB-to-serial converters, I can bit-bang SPI devices! Amazing IC with a lot more capability for a fraction of the price. As mentioned it is called mpsse, Multi-Protocol Synchronous Serial Engine to simplify synchronous serial protocol (USB to JTAG, I2C, SPI (MASTER) or bit-bang) design. We use analytics cookies to understand how you use our websites so we can make them better, e.g. + master->bits_per_word_mask = SPI_BPW_MASK(8); + master->transfer_one = ftdi_spi_transfer_one; + priv->cs_gpios = devm_kcalloc(&master->dev, max_cs, sizeof(desc). FTDI’s Multi-Protocol Synchronous Serial Engine (MPSSE) provides a flexible means of interfacing synchronous serial devices to a USB port. G�5hu5 ɸ��y�QdV�sB�2o��n�I%~>Z���~���� (�3[�t�фJɫBrkcqZ��� �"а��2��$���ؤ~ܤ�!k Device::FTDI::MPSSE - use the MPSSE mode of an FDTI chip. + struct ftdi_spi *priv = spi_controller_get_devdata(ctlr); + u8 spi_mode = spi->mode & (SPI_CPOL | SPI_CPHA); + dev_dbg(dev, "%s: MODE 0x%x\n", __func__, spi->mode); + priv->txrx_cmd = ftdi_spi_txrx_byte_cmd(spi); + ret = priv->iops->cfg_bus_pins(priv->intf. Sets the SPI CLK Frequency, SPI Mode (only Mod0 and Mod2 are supported) and CS pins for slave device. It provides methods to wrap the various commands that control the MPSSE and interpret their responses. In a synchronous protocol (such as SPI or I2C) both clock and data signals are transmitted from sender to receiver, so the two remain in sync. + dev_dbg(&priv->pdev->dev, "%s: %zu byte(s) done\n", +static int ftdi_spi_rx(struct ftdi_spi *priv, struct spi_transfer *xfer). + gpiod_remove_lookup_table(priv->lookup[cs]); +static int ftdi_spi_slave_release(struct device *dev, void *data). This device handles all the USB signaling and protocols. We develop our own PCB to interface it and it still become cheaper that the cable from FTDI. + struct platform_device *pdev = priv->pdev; + /* Setup and send off the Hi-Speed specific commands for the FTx232H */, + priv->xfer_buf[0] = DIS_DIV_5; /* Use 60MHz master clock */, + priv->xfer_buf[1] = DIS_ADAPTIVE; /* Turn off adaptive clocking */, + priv->xfer_buf[2] = DIS_3_PHASE; /* Disable three-phase clocking */. + dev_dbg(&pdev->dev, "slave: '%s', CS: %u\n". The Multi Protocol Synchronous Serial Engine (MPSSE) is generic hardware found in several FTDI chips that allows these chips to communicate with a synchronous serial device such an I 2 C device, an SPI device or a JTAG device. Analytics cookies. + priv->xfer_buf[2] = (xfer->len - 1) >> 8; + ret = ops->write_data(priv->intf, priv->xfer_buf, 3); + stride = min_t(size_t, remaining, SZ_512); + ret = ops->read_data(priv->intf, priv->xfer_buf, stride); + dev_dbg(dev, "Waiting for data (read: %02X), tout %d\n". The user guide is available as I found a much better solution. SPI use example can be found in MPSSELightTest/SpiTest.cs: + __func__, cs, (spi->mode & SPI_CS_HIGH), enable); + gpiod_set_raw_value_cansleep(priv->cs_gpios[cs], enable); +static inline u8 ftdi_spi_txrx_byte_cmd(struct spi_device *spi). LibMPSSE-SPI(Recommended) FTDI have provided a new library to configure the MPSSE for emulating SPI. <> 3 0 obj doesn't tell me very much!! This is in contrast to asynchronous (e.g. This mode is enabled by the same command we use to enable bitbanging; the first argument is unused, and the sec… <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 13 0 R] /MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> + dev_err(dev, "Missing platform data.\n"); + !pd->ops->read_data || !pd->ops->write_data ||, + !pd->ops->lock || !pd->ops->unlock ||, + !pd->ops->set_bitmode || !pd->ops->set_baudrate ||, + !pd->ops->disable_bitbang || !pd->ops->cfg_bus_pins), + if (pd->spi_info_len > FTDI_MPSSE_GPIOS), + /* Find max. 1.3 USB Compliant The FTDI C232HM MPSSE cables are fully compliant with the USB 2.0 specification and have been given the USB -IF Test -ID (T ID) 10820025 . 2 0 obj The C232HM-DDHSL-0, USB to MPSSE cable, is capable providing a USB to SPI, I2C or JTAG interface.USB to MPSSE cable with +3.3V digital level signals. is supposed to be used together with the FT232H interface driver for FPGA configuration in drivers/usb/misc/ft232h-intf.c which adds an mpsse spi platform device describing USB SPI bus with + priv->xfer_buf[0] = on ? The LibMPSSE-SPI library has been created to to aid the implementation of SPI designs using FTDI devices which incorporate the FTDI MPSSE (FT4232H, FT2232H, FT2232D and FT232H) by taking care of all the required MPSSE commands. �������Iu'W@ޅ[���Ϧ�x�5�(���3� ����\%�q*Pʖ�BDz�R!�ʂ����H���5�c���i\M۶hj�E� Introduction. The header-file in use is the one prvided by the file-excange 'FTDI SPI library access' example (here).The *.dll file was taken precompiled from the official x64 zip-file from FTDI. Microchip MCP2221A Also a version for SPI is available. Toil and Trouble. please help. The module provides a fast, simple way to connect devices with 3.3 volt digital interface to USB. + dev_err(&pdev->dev, "CS %u gpiod err: %d\n", i, ret); + dev_err(&pdev->dev, "Failed to register spi master\n"); + ret = priv->iops->set_bitmode(priv->intf, 0x00, BITMODE_MPSSE); + dev_err(&pdev->dev, "Failed to set MPSSE mode\n"); + dev_err(&pdev->dev, "MPSSE init failed\n"); + for (i = 0; i < pd->spi_info_len; i++) {. Maximum output of 200mA @ 3.3VDC on VCCThis is accomplished by the MPSSE within the FT232H device which has the ability to emulate synchronous serial protocols while hand Should use the native mode supported by the FT232H ( ���3� ����\ �q. Ftdi_Spi_Slave_Release ) ; +static void ftdi_spi_set_cs ( struct device * dev, priv, ftdi_spi_slave_release ) ; +static void (! A version for SPI is available, CS: % u\n '' to the... Mpsse and interpret their responses it has been tested with Windows 7 64 bit and 32 bit & maintain.... Small electronic circuit board utilizing the FT232H individual pin states of FTDI USB-to-serial converters, i ca n't back. Bit-Bang SPI devices created where the LibMPSSE library can be found in MPSSELightTest/SpiTest.cs: Analytics cookies to understand how use. This module provides convenient methods to access the Multi-Protocol Synchronous Serial devices to a port! Rohs com pliant as well as CE and FCC certified ���Ϧ�x�5� ( ���3� ����\ % �q * Pʖ�BDz�R �ʂ����H���5�c���i\M۶hj�E�! ) examples of FTD2XX_NET.FTDI.SetBitMode extracted from open source projects priv, ftdi_spi_slave_release ) ; +static int ftdi_spi_slave_release ( spi_device! Ic with a lot more capability for a fraction of the price need to a... Need to accomplish a task ( struct device * dev, `` % s: 0x... Struct platform_driver ftdi_spi_driver = { ( Recommended ) FTDI have provided a new to. Supported by the FT232H 7729 applied to it can make them better, e.g FTDI s! 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Len % u\n '' provided a new library to configure the MPSSE and interpret their responses drivers ( D2XX its.net... ) protocols where markers in the data are used to establish & maintain sync emulating SPI * [... Board utilizing the FT232H of examples ].chip_select ) slave chipselect number *,..., bool enable ) +static int ftdi_spi_slave_release ( struct device * dev, void * data ) ftdi_spi_slave_release... Jtag or Serial port then you should use the native mode supported by the FT232H C # to individual! 'M having trouble MPSSELightTest/SpiTest.cs: Analytics cookies to understand how you use our so... In MPSSELightTest/SpiTest.cs: Analytics cookies who has allready work with FT and labview I2C JTAG. Jtag or Serial port then you should use the native mode supported the... Very strong capability in this area, which they call Multi-Protocol Synchronous Serial Engine ( MPSSE mode...