- #Nucleo f401re usb device how to#
- #Nucleo f401re usb device full#
- #Nucleo f401re usb device software#
- #Nucleo f401re usb device Pc#
- #Nucleo f401re usb device windows#
#Nucleo f401re usb device how to#
Here’s how to communicate with the SPI-firmware: You can of course also do it your own way, it should be fairly straightforward. It’s entirely possible to connect a nucleo with the UART-fw to a raspberry pi, but the rpi must then use the programs written for UART. The SPI firmware will only work with a CLI or GUI written specifically for SPI, and similarly for UART. The SPI-version must be connected to a raspberry pi (or something else with an SPI-controller). When done reading, the nucleo transmits 7388 bytes, which must be combined on the receiving side to 3694 16-bit values. Upon completion of UART-reception an interrupt is generated after which the firmware flushes the CCD, reconfigures the timers driving the CCD and collects the desired number of integrations. The firmware can collect and average up to 15 integrations before returning the data. The 11th byte is the continuous flag (0 = return a single dataset, 1 = return a new dataset for every ICG-pulse (or every n-th in case averaging is enabled) and the 12th byte is the number (n) of integrations to average. To satisfy the timing requirements of the CCD, make sure the following is obeyed: The SH-period defines the integration time: The next 2x 4 bytes constitute the two 32-bit numbers holding the SH- and ICG-period respectively. The data ends up in a circular buffer, so it’s necessary to know where to start reading. The two first are simply a key (the letters ‘ER’) for the nucleo to recognize. To request a recording with an integration time of t_int, send the following 12 bytes to the nucleo: 0x45 0x52 0xSS 0xTT 0xUU 0xVV 0xKK 0xLL 0xMM 0xNN 0x01 0xYY Here’s how to communicate with the UART-firmware: Daniele Zannoni wrote a matlab script for the TCD1304 firmware. You can of course also do it your own way, it should be fairly straightforward with something like LabVIEW or MATLAB.
#Nucleo f401re usb device software#
You can use the software presented on this site, or Jens-Ulrich Fröhlich’s java-based GUI.
#Nucleo f401re usb device Pc#
The UART-enabled firmware can communicate with any pc over the nucleo’s USB connection. The CCD should be connected to the nucleo board through the following GPIO’s: To the USB-drive that appears, when attaching the nucleo-board to your computer’s (any computer’s) USB-port. Programming the STM32F401RE MCU is as simple as copying the file: F401_FW_TCD1304.bin Read more in the section Environment setup. To compile the firmware you’ll need a cross-compiling environment. Unless there’s a specific need for altering the firmware, it’s advised to use the precompiled binary included in the firmware zip-file. The feature may be disabled by editing stm32f4xx_it.c but it can be useful for debugging (or simply checking if the upload went well). The user LED on the nucleo boards flashes with the ICG-frequency. There’s Linux-only support for the SPI fw.
#Nucleo f401re usb device windows#
There’s Linux (CLI, GUI) and macos (CLI, GUI), and Windows (GUI) support for the UART fw.The maxium frame-rate for the TCD1304 is 1.4 Hz with the UART fw, 125 Hz with the SPI fw, and something like 10 Hz with the USB fw ¹.The UART/USB firmwares support continuous reading.The TCD1304’s MCLK is 2.0 MHz in the UART/USB fw, and 4.0 MHz in the SPI fw (in both firmwares this can easily be changed at compile-time: look in main.h).The SPI fw can’t do averaging, and with a bitrate of 15.6 Mbps it doesn’t have to. The UART/USB fw can average up to 15 integrations before sending data.USB bitrate is probably around 0,5-1 Mbps.
#Nucleo f401re usb device full#
SPI bitrate is 15.6 Mbps so transmission of a full dataset takes 4.7 ms (the bitrate is actually dependent on the SPI-master, the rpi can handle up to 15.6 Mbps). UART bitrate is 115.2 kbps so transmission of a full dataset takes 641 ms.SPI communication requires a raspberry pi
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