git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1672 bbd45198-f89e-11dd-88c7-29a3b14d5316

based on LS1G DEMO BOARD V1.1

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1667 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1666 bbd45198-f89e-11dd-88c7-29a3b14d5316

Modify IIC and USART drivers to avoid compiling error.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1655 bbd45198-f89e-11dd-88c7-29a3b14d5316

1. Add interrupt context check function (context_gcc.S)
2. Add lock (semaphore) for IIC, USART and Ethernet drivers to prevent simultaneously access
3. Add multiple channels support for scan mode of ADC driver
4. Modify miscellaneous drivers according to ADC driver changes
5. Add SWO output enable function (board.c)
6. Disable all interrupts in GPIO interrupt handler (hdl_interrupt.c)
7. Add two Ethernet utility functions (drv_ethernet.c)
8. Add accelerometer driver (analog output)
9. Add accelerometer demo (draft, application.c)

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1654 bbd45198-f89e-11dd-88c7-29a3b14d5316

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1647 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1645 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1641 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1640 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1639 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1635 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1634 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1630 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1625 bbd45198-f89e-11dd-88c7-29a3b14d5316

1. Solve the problem mentioned in revision 1623 (runtime error) 
   - Cause: In the EFM32 demo application, some TCP/IP functions are called in non-task context (e.g. "tcp_new()"). And after revision 1621, those functions will trigger the scheduler ("rt_schedule()") which seems to be triggered only in task context. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1624 bbd45198-f89e-11dd-88c7-29a3b14d5316

1. Remove "RT_USING_NETUTILS" defined in "rtconfig.h" to avoid compiling error
   - Warning: Due to the memory limitation, running lwIP on Gecko devices (EFM32G) is not properly tested.
   - Warning: To test lwIP, please revert the file, "components\net\lwip\src\arch\sys_arch.c", to revision 1620. There is a runtime error when working with the latest revision of that file. This error is currently under evaluation.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1623 bbd45198-f89e-11dd-88c7-29a3b14d5316

1. Add ENC28J60 Ethernet controller driver 
2. Add lwIP support (Please read "Readme.txt")
3. Add simple Http server demo application
4. Modify USART device write function to avoid sleep in ISR
5. Fix a bug in USART driver when using compiler optimization
6. Modify to make use the start-up code in libraries
7. Change the default build option for squeezing the executable file size
8. Modify source code alignment

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1622 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1615 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1614 bbd45198-f89e-11dd-88c7-29a3b14d5316

Rename and updated libcpu/avr32/uc3/exception.x (with .irp macro) to exception_gcc.S (without .irp macro) for better compatibility.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1613 bbd45198-f89e-11dd-88c7-29a3b14d5316

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