lpc1769-pin-usage-1-5 [Smoothieware]

ARM Pin	mBed Pin	LPCXpresso Pin	Smoothieboard 1.0

(Proposed) ^ Comment |

P0.0	P9	9	i2c1 sda	i2c1 sda	All: Internal I2C bus. Used for digipots and port expander.
P0.1	P10	10	i2c1 scl	i2c1 scl	All: Internal I2C bus. Used for digipots and port expander.
P0.2	USBTX	21	uart0 txd	uart0 txd	All: Used for ISP programming of the bootloader and for debugging.
P0.3	USBRX	22	uart0 rxd	uart0 rxd	All: Used for ISP programming of the bootloader and for debugging.
P0.4	P30	38	alpha_en_pin	`blue`	spare

note: also is rs485 rd2 |

P0.5	P29	39	alpha_dir_pin	`blue`	spare

note: also is rs485 td2 |

P0.6	P8	8	spi1 ssel	spi1 ssel	All: sdcard
P0.7	P7	7	spi1 sck	spi1 sck	All: sdcard
P0.8	P6	6	spi1 miso	spi1 miso	All: sdcard
P0.9	P5	5	spi1 mosi	spi1 mosi	All: sdcard
P0.10	P28	40	beta_en_pin	`blue`

uart1 txd | 1.5: connected to edison uart1 rxd _
note: also i2c2 sda |

P0.11	P27	41	beta_dir_pin	`blue`

uart1 rxd | 1.5: connected to edison uart1 txd _
note: also i2c2 scl |

P0.15	P13	13	spi0 sck

fpga sck | 1.0: User spi port. used for rrd glcd _
1.5: connected as master to fpga if populated, otherwise connected as slave to edison |

P0.16	P14	14	spi0 ssel

fpga ssel | 1.0: User spi port. used for rrd glcd cs _
1.5: connected as master to fpga if populated, otherwise connected as slave to edison |

P0.17	P12	12	spi0 miso

fpga miso | 1.0: User spi port _
1.5: connected as master to fpga if populated, otherwise connected as slave to edison |

P0.18	P11	11	spi0 mosi

fpga mosi | 1.0: User spi port. used for rrd glcd _
1.5: connected as master to fpga if populated, otherwise connected as slave to edison |

P0.19	-	Pad17	gamma_en_pin	`blue`	mosfet5

note: also i2c3 sda on lpcxpresso e2prom |

P0.20	-	Pad18	gamma_dir_pin	`blue`	mosfet6

note: also i2c3 scl on lpcxpresso e2prom |

P0.21	-	23	delta_en_pin	`blue`	servo1
P0.22	-	24	delta_dir_pin	`blue`	servo2	note: lpcxpresso led
P0.23	P15	15	hotend.thermistor_pin	adc0 thermistor0
P0.24	P16	16	bed.thermistor_pin	adc1 thermistor1
P0.25	P17	17	thermistor2	adc2 thermistor2
P0.26	P18	18	thermistor3	`blue`	adc3 dac	1.5: not used for thermistor anymore
P0.27	-	25	i2c0 sda	i2c0 sda	All: User i2c port. Not used
P0.28	-	26	i2c0 scl	i2c0 scl	All: User i2c port. Not used
P0.29	31	37	USB-D+	USB-D+
P0.30	32	36	USB-D-	USB-D-

P1.0			eth txd0	eth txd0
P1.1			eth txd1	eth txd1
P1.4			eth tx en	eth tx en
P1.8			eth crs	eth crs
P1.9			eth rxd0	eth rxd0
P1.10			eth rxd1	eth rxd1
P1.14			eth rx err	eth rx err
P1.15			eth ref clk	eth ref clk
P1.16			eth mdc	eth mdc
P1.17			eth mdio	eth mdio
P1.18	LED1	Pad1	led1	led1
P1.19	-	Pad2	led2	led2
P1.20	LED2	Pad3	led3	led3
P1.21	LED3	Pad4	led4	led4
P1.22	-	Pad5	3rd small fet	`blue`	alpha min endstop	1.0: spare on 3 and 4 driver boards
P1.23	LED4	Pad6	3rd large fet	`blue`	mosfet2	1.0: spare on 3 and 4 driver boards
P1.24	-	Pad7	alpha_min_endstop	`blue`	mosfet3
P1.25	-	Pad8	alpha_max_endstop	alpha max endstop
P1.26	-	Pad9	beta_min_endstop	`blue`	mosfet4
P1.27	-	Pad10	beta_max_endstop	`blue`

fpga clkin | 1.5: clock output to fpga; recommended for rrd click/buzz if fpga not populated |

P1.28	-	Pad11	gamma_min_endstop	gamma min endstop
P1.29	-	Pad12	gamma_max_endstop	gamma max endstop
P1.30	P19	19	spare	`blue`	beta min endstop	1.0: used for click button on rrd glcd
P1.31	P20	20	spare	`blue`	adc5 thermistor3

1.5: used for 4th thermistor |


P2.0	P26	42	alpha_step_pin	alpha step
P2.1	P25	43	beta_step_pin	beta step
P2.2	P24	44	gamma_step_pin	gamma step
P2.3	P23	45	delta_step_pin	delta step
P2.4	P22	46	psu.output_pin	`blue`	alpha dir
P2.5	P21	47	bed.heater_pin	`blue`	beta dir
P2.6	-	48	fan.output_pin	`blue`	gamma dir
P2.7	-	49	hotend.heater_pin	`blue`	delta dir
P2.8	-	50	epsilon_step_pin	epsilon step	All: spare on 3 and 4 driver
P2.9	-	Pad19	USB soft connect	USB soft connect
P2.10	-	51	ISP button	ISP button
P2.11	-	52	spare

fpga program | 1.0: used for pause/kill/back pin on glcd _
1.5: fpga reset pin; recommended for rrd click/buzz if fpga not populated |

P2.12	-	53	pause button	All: play/pause button
P2.13	-	27	epsilon_dir_pin	epsilon dir	All: spare on 3 and 4 driver

P3.25	-	Pad13	spare	`blue`	5v pwm out	1.0: used for encoder pin for all panels
P3.26	-	Pad14	spare	`blue`	mosfet1	1.0: used for encoder pin for all panels
P4.28	-	Pad15	play/pause led	play/pause led
P4.29	-	Pad16	epsilon_en_pin	`blue`	beta max endstop	1.0: spare on 3 and 4 driver

NOTE The italicized pins are hardcoded and would need to be changed in the source code (P0.2, P0.3, P0.6 - P0.9, P0.29, P0.30, P2.9, P2.10) The rest are soft configurable in config.
v1.5 NOTES The blue|blue tagged pins have had their function changed for Smoothieboard v1.5

Chip Pin	Module Pin	Breakout Pin	Arduino Pin	Smoothieboard 1.5	Comment
GP109	55	J17.11		spi5 sck
GP110	53	J18.10		spi5 ssel a
GP111	51	J17.10		spi5 ssel b
GP114	59	J18.11		spi5 misi
GP115	57	J17.12		spi5 moso
GP129	63	J18.12	D4		connected to mcu reset
GP130	61	J18.13	D0	uart1 rx	connected to mcu uart1 txd
GP131	46	J19.8	D1	uart1 tx	connected to mcu uart1 rxd

GP77	60	J19.12		-	host breakout: sd0 cd
GP78	58	J20.11		-	host breakout: sd0 clk
GP79	62	J20.12		-	host breakout: sd0 cmd
GP80	66	J20.13		-	host breakout: sd0 d0
GP81	70	J20.14		-	host breakout: sd0 d1
GP82	64	J19.13		-	host breakout: sd0 d2
GP83	68	J19.14		-	host breakout: sd0 d3
GP84	44	J20.8		-	host breakout: sd0 clk fb
GP134	22	J20.3		-	host breakout: uart2 rxd
GP135	27	J17.5		-	host breakout: uart2 txd

GP40	52	J19.10		-	panel breakout: spi2 sck
GP41	54	J20.10		-	panel breakout: spi2 ssel
GP42	50	J20.9		-	panel breakout: spi2 moso
GP43	56	J19.11		-	panel breakout: spi2 misi
					panel breakout: enc a
					panel breakout: enc b
					panel breakout: click
					panel breakout: button
					panel breakout: buzz

FPGA Pin

One/Pro/Duo ^ Zpuino Pin ^ Smoothieboard 1.5 ^ Comment |

B1.40P	BH3	P62	mcu clkout
B1.40N	osc in	-	osc in
B2.1P			spi0 sck	main fpga spi slave port
B2.1N			fpga m0	tied high for serial slave programming
B2.3P			spi0 mosi	main fpga spi slave port
B2.3N			spi0 miso	main fpga spi slave port
B2.13P			fpga m1	tied high for serial slave programming
B2.56P			fpga init	tied high to boot immediately
B2.65N			spi0 ssel	main fpga spi slave port

Summary:

1.5 new functions: dac, 5v pwm out, edison uart, 2 servos; optional function (not populated and pins free by default): rs485
the 5 enable pins will go on an 8 pin i2c io expander (PCA9554B); MS1, MS2, and RESET/SLEEP stepper pins will have pull-ups to expander pins
expander pins unassigned: 0
mcu pins spared without fpga: 2
mcu pins spared without edison: 2
mcu pins unassigned: 0
functions unassigned: 0
for rrd display support recommended that rs485 pins be used for encoder and two fpga pins be used for buttons
balance: 0 mcu pins remaining
I'm pretty sure this is currently 1 pin short of full backwards compatibility

Edison Pin Usage:

FPGA Pin Usage:

Summary: