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Altera_Forum's avatar
Altera_Forum
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20 years ago

should i write functions myself?

wentao and clansdown: i want to use sl811hs,and select it in kernel ,should i write 4 functions myself?? 1. char SL811Read (hci_t * hci, char offset) { hcipr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

and when i build the kernel, here were some error:

error: `GPDR' undeclared (first use in this function)[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1229

error: `GPIO_RISING_EDGE' undeclared (first use in this function)[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1230

error: (Each undeclared identifier is reported only once[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/host/hc_sl811.c] kernel_0416 line 1229

i find "GPIO_RISING_EDGE"and "GPDR" in sl811hs.c , but the program never defined them. why???