32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
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NuttX-0.4.13
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------------
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This is the 45th release of NuttX. The release extends the support
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for the STMicro STM32 microcontroller. Minimal support for the
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STM3210E-EVAL development board based around the STM32F103ZET6 MCU
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was released in NuttX-0.4.12. This release adds:
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* A simple interface definition to support some FLASH, EEPROM,
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NVRAM, etc. devices.
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* Verified SPI operation using driver for SPI based FLASH parts
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M25P64 and M25P128.
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* Improved Cortex-M3 context switching. This should improve
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context switching performance be 2x in certain cases.
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* Added a USB device-side driver for the STM32. This is an early
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release of a very complex driver; some bugs are expected.
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* The USB driver has been verified against the USB serial device
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class driver. There is at least one known outstanding issue
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(see the full bug description in the TODO list).
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This release also corrects some important bugs in the early STM32 release:
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* Fixed several errors the prevented operation of NuttX on an
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STM32 development board using USART2 as the serial console.
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* Fixed and optimization-dependent race condition in the clock
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initialization.
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* Fixed a critical bug in the interrupt control logic that could
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cause interrupt operations to failed used for interrupts in a
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certain range.
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This tarball contains a complete CVS snapshot from November 4, 2009
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