lpcware

GPIO out on 0_4 and 0_5 on 1115

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by avass on Sat Feb 16 11:30:47 MST 2013
I am trying to use pin 0_4 and 0_5 as a GPIO on an LPCXpresso LPC1115. I also added 0_3 as a control pin.

I use the following code, no code is running ( except SystemCoreClockUpdate(); )

LPC_IOCON->PIO0_3 &= ~0x43F; // 0100 0011 1111 Zero FUNC, MODE, HYS and OD
LPC_IOCON->PIO0_4 &= ~0x307; // 0011 0000 0111 = 0x307 : Zero FUNC, I2CMODE
LPC_IOCON->PIO0_5 &= ~0x307; // 0011 0000 0111 = 0x307 : Zero FUNC, I2CMODE
LPC_GPIO[0]->DIR|=(1<<4)|(1<<5)|(1<<3); // Set these pins as output
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6); // Enable Clock for the GPIO
LPC_GPIO[0]->DATA&=~((1<<4)|(1<<5)|(1<<3));// Set them to 0
LPC_GPIO[0]->MASKED_ACCESS[(1<<4)|(1<<5)|(1<<3)] = (1<<4)|(1<<5)|(1<<3);

When I run the above code, pin0_3 goes up to 3.3V, but 0_4 and 0_5 aren't.

Anybody has any idea?

Thanks,

-A

Outcomes