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The MAX78000 SDK

Refer to Getting Started with the MAX78000 Evaluation Kit for details on using the SDK.

Release Notes

August 26, 2022

  • Improved documentation for the options available in the makefile system.
  • Addded USB examples for MAX78002
  • Fix missing TFT_ENABLE flag from some CNN demos
  • Fix memory allocation bug in CNN digit-detection-demo
  • Add SD card functionality to ImgCapture example
  • Update HM0360 mono drivers
  • Fix SW_STEAMING -> SW_STREAMING typo in HM0360 drivers
  • Re-work project.mk for projects specifically targeting the 0V7692 camera.

August 7, 2022

  • Updated CMSIS library to version 5.9.0.
  • Improved MIPI-CSI2 API.
  • Added support for flash read and flash write locking.
  • Improved RTC busy flag checking.
  • Added multi-transaction mode to SPI API.
  • Added support to select the voltage levels (VDDIO or VDDIOH) for the camera interface.
  • Added Winbond SPI Flash driver.
  • Added VS Code project files for all examples.
  • Added makefile switch to allow selection of ARM ABI.
  • Added missing definition for GCR_RST.usb field.
  • Added missing USB register definitions.
  • Fixed incorrect size of RTC_SSEC.ssec field.
  • Improved support for IPLL and EBO clocks.
  • Improved the makefile system.
  • Added function to get/set the system clock divider.
  • Added aisegment_unet, camvid_unet, cifar-100-mixed, cifar-100-residual, cifar-100-simplewide2x-mixed, digit-detection-demo, svhn_tinierssd, UNet-highres-demo, and ImgCapture-Serial, ARM-DSP, cifar-100-effnet2, cifar-200-mobilenet-v2-0.75, imagenet, and WearLeveling examples.
  • Added ability to seperately enable/disable the instruction caches.
  • Abstracted external memory interfaces into a common set of functions.
  • Added support for PAG7920, color HM0360, monochrome HM0360 cameras.
  • Deprecated NVIC_SetVector (CMSIS 3 version) in favor of MXC_NVIC_SetVector
  • Changed presence pulse register flag location in the 1-wire registers
  • Modified ADC asynchronous conversion function to accept the configuration parameter by reference
  • Fixed bug when using an ADC external scale setting of 3
  • Added correct cache flushing code after all flash writes
  • Added generic transmit functions for I2S
  • Fixed error that caused I2C underflows to no be reported correctly
  • Improved asynchronous I2C master transactions
  • Fixed I2C slave bug that would attempt to call the callback functions even when one had not been provided
  • Changed the RTC get time funtion to not block when the RTC was busy

April 11, 2022

  • Added power down mode to MAX78000 and MAX78002 LP examples.
  • Added support for various cameras into the MAX78002 CameraIF example.
  • Added TFT use into MAX78002 cats-dogs_demo example.
  • Added MIPI-CSI2 peripheral driver and example for MAX78002.
  • Fixed incorrect memory size in MAX78002's GCC linker script.
  • Added contrast and brightness settings to camera driver.
  • Fixed I2C general call addressing enable/disable bug.
  • Resolved pointer alignment warnings.
  • Added support for enabling/disabling the IPLL clock for the MAX78002.
  • Added VSCode support for all example projects.
  • Added I2C_SCAN example for MAX78000 and MAX78002.
  • Added kws20_demo for MAX78002.
  • Added additional 3rd party camera, display, and touch screen drivers.
  • Added BSP for MAX78000 audio board.

February 15, 2022

  • Moved common board support files to /Libraries/MiscDrivers folder.
  • Added FreeRTOS examples for the MAX78000 and MAX78002.
  • Added cats-dogs_demo for the MAX78002.
  • Fixed bit position for OWM presence detect bit.
  • Exposed function to read RTC busy flag.
  • Exposed function to read intermediate RX and TX count for UART asynchronous transactions.
  • Added support for bi-directional I2S.

December 10, 2021

  • Improved RGB565 support for TFT driver.
  • Fixed baud rate calculations for UART0 through UART2.
  • Added low power mode example.
  • Added ability to query progress of asynchronous UART transactions.
  • Added 16- and 8-bit accesses to the CRC data register.
  • Fixed issue with SPI callbacks not being called when using DMA.
  • Fixed issue selecting the appropriate clock divider when initializing timers.
  • Fixed issue with releasing DMA channels after UART DMA transaction complete.

September 20, 2021

  • Updated all Eclipse project files to resolve indexer errors.
  • Added support for additional camera models.
  • Changed startup file to enable instruction cache by default.
  • Added libary MXC_SYS library function to retreive the device's unique serial number.
  • Fixed bug in SPI baud rate calculations.
  • Added callback functions for I2S DMA operations.
  • Added GPIO ports 2 and 3 to the low power wakeup functions.
  • Added RTC trimming function.
  • Improved Semaphore support.
  • Improved WUT support.
  • Fixed incorrect clock source calculations when configuring timers.

June 15, 2021

  • Added touchscreen support to faceid_evkit and faceid_evkit-riscv demos.
  • Added DMA streaming mode to camera driver.
  • Fixed support for P3.0 and P3.1 GPIO pins.
  • Changed internal handling of DMA instances.
  • Improved I2S support for various word sizes when using DMA.
  • Fixed timer code to select the proper source clock.
  • Modified UART baud rate selection code.

April 30, 2021

  • Added SD card over SPI support for the MAX78000FTHR board.

April 14, 2021

  • Added low power support to facid_evkit and kws20_demo examples.
  • Updated low power APIs to use low power names provided in the Users Guide.
  • Added luminance support to OV7692 camera driver.
  • Added support for SPI mode selection in SPI API.
  • Added support for VDDIO/VDDIOH selection in SPI API.
  • Fixed alignment issue in Flash API.
  • Added additional configuration functions to I2C API.
  • Added faceid_evkit-risv, kws20_demo-risv, rps, and rps-demo examples.
  • Added board support files for the MAXREFDES178.

January 24, 2021

  • Modified Camera driver to accept a DMA channel to use.
  • Added support for the MAX78000 feather board's optional add-on display.
  • Changed some examples to extract the CNN functionality into its own source file.
  • Renamed the BBFC block to GCFR to match the User Guide contents.
  • Renamed wakeup timer CN register to CTRL to match the User Guide contents.
  • Minor updates to OV7692 camera driver.
  • Reduced the number of DMA channels supported to 4, matching the hardware.
  • Added access functions for certain RISC-V core registers.
  • Added initial implementation of RISC-V MXC_Delay() function.
  • Adjusted internal peripheral driver functions to allow better compatibility with other Maxim microcontrollers.
  • Renamed cats-vs-dogs-chw example to cats-vs-dogs.
  • Renamed kws20 example to kws_v3.

November 6, 2020

  • Added missing GCR registers and fields.
  • Cleaned up PWRSEQ registers.
  • Improved low power functionality support.
  • Removed MXC_Delay functions from the RISC-V libraries.

October 23, 2020

  • Added support for MAX78000 FTRH Rev A board.
  • Modified camera driver to use DMA.
  • Set CRC data register data types properly to contol access width.
  • Added missing ECC IRQ.
  • Added missing semaphore registers.
  • Added implementation of 1-Wire API.

September 24, 2020

  • Added mnist-streaming example.
  • Modified cats-dogs_demo to use DMA.
  • Added 8-bit and 16-bit accessors to CRC data register.
  • Added missing WELR and RLR registers to FLC block.
  • Corrected the address for the TRIMSIR block.

September 4, 2020

  • Resolved warning in AES initialization code.

September 3, 2020

  • Added faceid_evkit example.
  • Adeded snake_game_demo example.
  • Completed Wakeup Timer (WUT) example.
  • Modified TFT libraries to support different screen orientations.
  • Improved DMA support in the camera.
  • Changed FCR register and field names to match user guide.
  • Reordered watchdog timer instances to match the user guide.
  • Removed unused ECC files.
  • Set the correct base addresses for the low-power comparators.
  • Added functions to allow wake up from low-power timers.
  • Updated the flash controller code to the latest revision.
  • Improved full-duplex communication code for UART.

July 9, 2020

  • Moved camera driver files from the example folders to the Libraries\Boards\MAX78000 folder.
  • Replaced the CNN/cats_dogs-chw-fifo example with the CNN/cats-dogs_demo example.

July 1, 2020

  • Added macros for referencing evaluation kit LEDs by their name on the board.
  • Improved support for the TFT display on the evaluation kit.
  • Added MXC_UART_ReadCharacterRaw and MXC_UART_WriteCharacterRaw functions. The "Raw" functions are non-blocking and will return an error code if a character cannot be read or written. The "non-raw" functions will block until the character can be processed.
  • Improved support for paralled camera interface.
  • Added these examples: CameraIF, cats_dogs-chw-fifo, faceid, faceid_demo,

June 16, 2020

  • Updated the CNN/kws20_demo example application. The most significant update being the addition of TFT support.
  • Updated the wakeup timer (WUT) example to include deep sleep mode.
  • Modified the TFT and touchscreen code in the board folder to be more board independent.
  • Corrected some misnamed registers in adc_regs.h.
  • Replaced all instances of IntEnable and IntDisable with EnableInt and Disable to maintain consistency across all drivers.
  • Added support for the low-power GPIO pins (P3.0 and P3.1).

June 7, 2020

  • In the Documentation folder of the SDK, added a MAX78000.html file which serves as a single source for all MAX78000 related documents.
  • Added a README.md file for each example.
  • Added automatic configuration of ADC GPIO pins.
  • Fixed minor GPIO peripheral library bugs.
  • Added optional configuration of TMR GPIO pins.

May 21, 2020

  • Initial Release

Known Issues & Upcoming Features

  • Debug support for the RISC-V core has not been validated.
  • There will be more examples coming in a future release.
  • The Eclipse projects show errors and warnings indicating there are unresolved references. However, the projects still build and run correctly.
  • When uninstalling the SDK using the maintenance tool, an error will occur referring to the fstab file. This error can be ignored - the uninstall will still complete.
  • The MXC_Delay library is not complete when building for the RISC-V core.

Example Status

Example GCC Status Eclipse Support Notes
ADC Complete Yes The overflow, low limit, and high limit are not reported properly in the example.
AES Complete Yes
CameraIF Complete Yes
CNN/cats-dogs_demo Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/cats-vs-dogs Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/cifar-10 Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/cifar-100 Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/faceid Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/faceid_demo Complete No
CNN/faceid_evkit Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/kws20_demo Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/kws20_v3 Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/mnist Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CNN/mnist-riscv Complete Partial Debug support for code running on the RISC-V is not yet supported in Eclipse.
CNN/mnist-streaming Complete Partial Debug support for code running on the RISC-V is not yet supported in Eclipse.
CNN/snake_game_demo Complete Yes The project can be imported into Eclipse, but cannot be created using the New project wizard.
CRC Complete Yes
DMA Complete Yes
ECC Complete Yes
Flash Complete Yes
GPIO Complete Yes
Hello_World Complete Yes
I2C Complete Yes
I2S Complete Yes
ICC Complete Yes
LP In Progress In Progress
Pulse_Train Complete Yes
RTC Complete Yes
SPI Complete Yes
TFT_Demo Complete Yes
TMR Complete Yes
TRNG Complete Yes
UART Complete Yes
Watchdog Complete Yes
WUT Complete Yes

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