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PlatformIO framework for the LPC176x MCU series

This framework is part of the custom PlatformIO platform that MarlinFirmware uses to build for the LPC176x MCU.

The framework aims to eventually be Arduino API compatible, though Arduino libraries will probably not work, this is a work in progress with most basic functionality available.

Hardware Serial Ports

If your board layout does not use the default pins for UART RX/TX override them with the definitions below.

Serial TX RX FUNCNUM
Default P0_02 P0_03 1
Serial1 TX RX FUNCNUM
Default P0_15 P0_16 1
LPC_PINCFG_UART1_P2_00 P2_00 P2_01 2
Serial2 TX RX FUNCNUM
Default P0_10 P0_11 1
LPC_PINCFG_UART2_P2_08 P2_08 P2_09 2
Serial3 TX RX FUNCNUM
Default P0_00 P0_01 2
LPC_PINCFG_UART3_P0_25 P0_25 P0_26 3
LPC_PINCFG_UART3_P4_28 P4_28 P4_29 3

AnalogRead

There are 8 ADC channels available

Pin Channel Number
P0_02 7
P0_03 6
P0_23 0
P0_24 1
P0_25 2
P0_26 3
P1_30 4
P1_31 5

AnalogWrite

Although all pins can be used for PWM (software mode) there are 6 Hardware PWM channels, if a hardware channel is available for a pin but it is in use by another pin it will fall back into software mode, All channels software and hardware share a period (default 20ms).

Hardware channel Attached pins
1 P1_18, P2_00
2 P1_20, P2_01, P3_25
3 P1_21, P2_02, P3_26
4 P1_23, P2_03
5 P1_24, P2_04
6 P1_26, P2_05