hi all, i got the interrupt handler working for SPI Receive in PPC 440 using install_hdlr(). Now i am trying to enable the External IRQ0 in my stand alone application. I am trying to detect the positive of the interrupt pulse, so i wrote corresponding bit to the UIC0_PR and UIC0_EN register and also calling the install_hdlr(). but still it detects the zero state at the IRQ0 pin and always executes the interrupt handler. when i read back the DCRs UIC0 enable and polarity registers using my application, the control word is fine. but when i read using uboot commands getdcr in command window, the status of both enable and polarity registers are not enabled for IRQ0. when i try to set the corresponding bit for IRQ0 using setdcr, it gives me message, "Masking bogus interrupt for 0x17" where am i going wrong.Some one please help. Thanks in advance.
Thanks & Regards, Prathika R.
Stefan Roese wrote:
On Wednesday 08 April 2009, prathika wrote:
I am working on u-boot 1.1.6 version for PowerPC 440.
First of all. v1.1.6 is really old. I suggest that you use the current (latest) version instead.
I am using the hello world application from the examples folder. I had no issues in loading and executing it. Now I have enabled SPI interrupt in the application. I have written for SPI loopback. My issue is, as there is no interrupt handler defined for the SPI in uboot, whenever i execute my application, it says "Masking bogus interrupt for Vector 0x08". I am calling "install_irq_handler" function for assigning my own interrupt handler for SPI as part of my application itself. I can understand that, there is no exclusive handler for SPI in uboot, so it is disabling the SPI interrupt and printing the BOGUS INTERRUPT message. Now how do I get rid of this and have my own interrupt handler??
You just need to install you "own" interrupt handler. This is done via install_hdlr(). See examples/interrupt.c.
Best regards, Stefan
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