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On Wed, 2003-04-23 at 11:24, Sung-Nan Yao wrote:
Hi, After tracing the Linux code for H3800, I found the memory mapped I/O between the iPAQ H3800 and iPAQ H6000 is different. So I think some code in eCos won`t work on H3870.
For example, the RS232_ON is different between them.
In linux, #define H3800_ASIC1_GPIO_OUT 0x49001e68 #define GPIO1_RS232_ON (1 << 2)
In eCos, #define EGPIOBase 0x49000000 #define EGPIO_BITSY_RS232_ON (1 << 7)
In InitUART3 macro in eCos,it initializes the UART3. In the end of the macro,it turns on the RS232_ON by setting the EGPIOBase. But in the linux,it sets the H3800_ASIC1_GPIO_OUT.
So I change the EGPIOBase to 0x49001e68 and EGPIO_BITSY_RS232_ON to (1 << 7). In the test on my H3870,the Serial Port can work.
Does anyone find the problem or do the porting?
As far as I know, no one has ever tried to get eCos/RedBoot running on the 3870.
Jifl -- eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts --[ "You can complain because roses have thorns, or you ]-- --[ can rejoice because thorns have roses." -Lincoln ]-- Opinions==mine
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