511b46de83
Happy Gecko's USB Low Energy Mode does not work properly with isochronous endpoints. Note that Happy Gecko errata USB_E112 states: Do not use the SUSPEND mode of LEMOSCCTRL in USB_CTRL. In rare cases with high data throughput, a transmission can fail when this mode is enabled. Use the GATED mode of LEMOSCCTRL for the best energy efficiency. The NONE mode can be used to disable energy savings However, even using GATE mode causes problems for high-frequency isochronous transfers. The primary effect for OUT endpoints is that the first read will succeed, and the following one (targetting the next frame) will fail with zero bytes incoming data, and PKTDRPSTS is set in the related interrupt status register. Disabling LEMOSCCTRL (set to NONE) solves the problem. Since this will cause increased energy usage, do this only when an ISOC endpoint is added. |
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README.md
mbed SDK
The mbed Software Development Kit (SDK) is a C/C++ microcontroller software platform relied upon by tens of thousands of developers to build projects fast.
The SDK is licensed under the permissive Apache 2.0 licence, so you can use it in both commercial and personal projects with confidence.
The mbed SDK has been designed to provide enough hardware abstraction to be intuitive and concise, yet powerful enough to build complex projects. It is built on the low-level ARM CMSIS APIs, allowing you to code down to the metal if needed. In addition to RTOS, USB and Networking libraries, a cookbook of hundreds of reusable peripheral and module libraries have been built on top of the SDK by the mbed Developer Community.
Documentation
- Tools: how to setup and use the build system.
- mbed library internals
- Adding a new target microcontroller
Supported Microcontrollers and Boards
View all on the mbed Platforms page.
NXP:
- mbed LPC1768 (Cortex-M3)
- u-blox C027 LPC1768 (Cortex-M3)
- mbed LPC11U24 (Cortex-M0)
- EA LPC11U35 (Cortex-M0)
- mbed LPC2368 (ARM7TDMI-S)
- LPC2460 (ARM7TDMI-S)
- LPC810 (Cortex-M0+)
- LPC812 (Cortex-M0+)
- EA LPC4088 (Cortex-M4F)
- EA LPC4088 DM (Cortex-M4F)
- LPC4330 (Cortex-M4F + Cortex-M0)
- LPC1347 (Cortex-M3)
- LPC1114 (Cortex-M0)
- LPC11C24 (Cortex-M0)
- LPC1549 (Cortex-M3)
- LPC800-MAX (Cortex-M0+)
- DipCortex-M0 (Cortex-M0)
- DipCortex-M3 (Cortex-M3)
- BlueBoard-LPC11U24 (Cortex-M0)
- LPCCAPPUCCINO (Cortex-M0)
- Arch (Cortex-M0)
- Arch GPRS (Cortex-M0)
- Arch Pro (Cortex-M3)
Freescale:
- FRDM-KL05Z (Cortex-M0+)
- FRDM-KL25Z (Cortex-M0+)
- FRDM-KL43Z (Cortex-M0+)
- FRDM-KL46Z (Cortex-M0+)
- FRDM-K20D50M (Cortex-M4)
- FRDM-K22F (Cortex-M4F)
- FRDM-K64F (Cortex-M4F)
STMicroelectronics:
- Nucleo-F030R8 (Cortex-M0)
- Nucleo-F072RB (Cortex-M0)
- Nucleo-L053R8 (Cortex-M0+)
- Nucleo-F103RB (Cortex-M3)
- Nucleo-L152RE (Cortex-M3)
- Nucleo-F302R8 (Cortex-M4F)
- Nucleo-F334R8 (Cortex-M4F)
- Nucleo-F401RE (Cortex-M4F)
- Nucleo-F411RE (Cortex-M4F)
- STM32F4XX (Cortex-M4F)
- STM32F3XX (Cortex-M4F)
- STM32F0-Discovery (Cortex-M0)
- STM32VL-Discovery (Cortex-M3)
- STM32F3-Discovery (Cortex-M4F)
- STM32F4-Discovery (Cortex-M4F)
- STM32F429-Discovery (Cortex-M4F)
- STM32L0-Discovery (Cortex-M0+)
- Arch Max (Cortex-M4F)
Nordic:
- nRF51822-mKIT (Cortex-M0)
- Arch BLE (Cortex-M0)
Renesas:
- RZ-A1H (Cortex-A9)
Silicon Labs:
- [EFM32 Zero Gecko] (https://developer.mbed.org/platforms/EFM32-Zero-Gecko/) (Cortex-M0+)
- [EFM32 Happy Gecko] (https://developer.mbed.org/platforms/EFM32-Happy-Gecko/) (Cortex-M0+)
- [EFM32 Leopard Gecko] (https://developer.mbed.org/platforms/EFM32-Leopard-Gecko/) (Cortex-M3)
- [EFM32 Giant Gecko] (https://developer.mbed.org/platforms/EFM32-Giant-Gecko/) (Cortex-M3)
- [EFM32 Wonder Gecko] (https://developer.mbed.org/platforms/EFM32-Wonder-Gecko/) (Cortex-M4)
Supported Toolchains and IDEs
- GCC ARM: GNU Tools for ARM Embedded Processors
- ARMCC (standard library and MicroLib): uVision
- IAR: IAR Embedded Workbench
- GCC code_red: Red Suite
- GCC CodeSourcery: Sourcery CodeBench
- GCC ARM: Em::Blocks
- GCC ARM: CooCox CoIDE
API Documentation
- RTOS API
- TCP/IP Socket API (Transports: Ethernet, WiFi, 3G)
- USB Device API
- USB Host API
- DSP API
- Flash File Systems: SD, USB MSD, semihosted
- Peripheral Drivers API
Community
For discussing the development of the mbed SDK itself (Addition/support of microcontrollers/toolchains, build and test system, Hardware Abstraction Layer API, etc) please join our mbed-devel mailing list.
For every topic regarding the use of the mbed SDK, rather than its development, please post on the mbed.org forum, or the mbed.org Q&A.
For reporting issues in the mbed libraries please open a ticket on the issue tracker of the relevant mbed official library.