Hi
I'm trying to figure out the default pin function I should use for the LPC1768 board in a project created in an external IDE (like uVision) without using the mbed libraries at all.
According to the LPC1768 schematic:
These pins are connected to the DIP pins and the leds so can be configured by the user to any function (except from the leds which can only work as outputs obviously )
DIP5 P0.9
DIP6 P0.8
DIP7 P0.7
DIP8 P0.6
DIP9 P0.0
DIP10 P0.1
DIP11 P0.18
DIP12 P0.17
DIP13 P0.15
DIP14 P0.16
DIP15 P0.23
DIP16 P0.24
DIP17 P0.25
DIP18 P0.26
DIP19 P1.30
DIP20 P1.31
DIP21 P2.5
DIP22 P2.4
DIP23 P2.3
DIP24 P2.2
DIP25 P2.1
DIP26 P2.0
DIP27 P0.11
DIP28 P0.10
DIP29 P0.5
DIP30 P0.4
LED1 P1.18
LED2 P1.20
LED3 P1.21
LED4 P1.23
Then there are the internally connected ENET pins which I think should be set to the ENET function bu default, is this correct and is it OK the leave the pull up enabled?
P1.0/ENET-TXD0 connected to TGT_P1.0
P1.1/ENET-TXD1 connected to TGT_P1.1
P1.4/ENET-TX_EN connected to TGT_P1.4
P1.8/ENET_CRS connected to TGT_P1.8
P1.9/ENET_RXD0 connected to TGT_P1.9
P1.10/ENET_RXD1 connected to TGT_P1.10
P1.14/ENET-RX_ER connected to TGT_P1.14
P1.15/ENET-RX_CLK connected to 50MHZ
P1.16/ENET-MDC connected to TGT_P1.16
P1.17/ENET-MDIO connected to TGT_P1.17
And finally the remaining internally connected pins that I'm not sure about. Can they be left as inputs or need to be set as outputs or even an alternative pin function?
And what about the pull up/down resistor setting?
P1.25/MC1A/MAT1.1 connected to LED_LINK
P1.26/MC1B/PWM1.6/CAP0.0 connected to LED_SPEED
P1.27/CLKOUT/USB_OVRCR/CAP0.1 connected to ETH_OSC_EN
P1.28/MC2A/PCAP1.0/MAT0.0 connected to ETH_RST
P2.9/USB_CONNECT/RXD2 connected to TGT_SCON
I hope someone can help
Thank you
Alex
Hi
I'm trying to figure out the default pin function I should use for the LPC1768 board in a project created in an external IDE (like uVision) without using the mbed libraries at all.
According to the LPC1768 schematic:
These pins are connected to the DIP pins and the leds so can be configured by the user to any function (except from the leds which can only work as outputs obviously )
Then there are the internally connected ENET pins which I think should be set to the ENET function bu default, is this correct and is it OK the leave the pull up enabled?
And finally the remaining internally connected pins that I'm not sure about. Can they be left as inputs or need to be set as outputs or even an alternative pin function? And what about the pull up/down resistor setting?
I hope someone can help
Thank you Alex