Crumbuino-Chip45

Arduino BSP for Crumbuino Nano and Crumbuino Mega
It is based on the ArduinoCore-avr

Content

• BSP support
  • Crumbuino Nano
  • Crumbuino Mega
• Installation
• Crumbuino Nano - Arduino Pin Mapping
• Crumbuino Mega - Arduino Pin Mapping
• Changelog

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BSP support

Crumbuino Nano

Crumbuino Nano

Crumbuino-Nano corresponds to our popular Crumb328 V2.3 module with the ATmega328P mikrocontroller and CP2102 USB UART converter. As Crumbuino-Nano version the module comes with Arduino bootloader preloaded and mounted 16MHz crystal. In this configuration it is comparable to Arduino Nano V3.0 module!

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Crumbuino Mega

Crumbuino Mega

Crumbuino-Mega corresponds to our popular Crumb2560 V1.1 module with the ATmega2560 mikrocontroller and CP2102 USB UART converter. As Crumbuino-Mega version the module comes with Arduino bootloader preloaded and mounted 16MHz crystal. In this configuration it is comparable to Arduino Mega 2560 module!

Due to the preloaded Arduino Bootloader and the integrated USB UART converter with mini-USB connector, the module can directly be used with the Arduino IDE as an e.g. Arduino Mega 2560 board.

Main differences to the Arduino Mega 2560 is a different pinout, no 5V regulator (the Crumbuino-Mega can be supplied through USB) and the status LED is connected to a different pin. Additionally the Crumbuino-Mega provides RS232 and RS485 interfaces, which are disabled by default, so that the IO pins can be used for other purposes.

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Installation

In ArduinoIDE Preferences open Preferences

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In Preferences open Additional Boards Manager URLs: by clicking on the small icon on the right side

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Add https://raw.githubusercontent.com/beegee-tokyo/Crumbuino-Chip45/main/package_crumbuino_index.json as a new line in the window.

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Exit and restart Arduino IDE.

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Open Tools -> Boards Manager

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In Boards Manager type Crumbuino, once you see the Crumbuino BSP, click on install.

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After the install is finished, you can select the Crumbuino Nano or Crumbuino Mega board and create your sketch.

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Made by Chip45

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Crumbuino Nano - Arduino Pin Mapping

Connector Con1						Connector Con2
Pin#	Port	Arduino GPIO# / Function		Arduino GPIO# / Function	Port	Pin#
1	PD0	0 / RX			VCC	1
2	PD1	1 / TX			/RESET	2
3	PD2	2			PC5	3
4	PD3	3 / PWM		A4	PC4	4
5	PD4	4		A3	PC3	5
6	PD5	5 / PWM		A2	PC2	6
7	PD6	6 / PWM		A1	PC1	7
8	PD7	7		A0	PC0	8
9	PB0	8		A7	ADC7	9
10	PB1	9 / PWM			GND	10
11	PB2	10 / PWM			Aref	11
12	PB3	11 / PWM		A6	ADC6	12
13	PB4	12		VCC	AVCC	13
14	GND	16 / USART2_TX		13	PB5	14

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Crumbuino Mega - Arduino Pin Mapping

Connector Con1						Connector Con2
Pin#	Port	Arduino GPIO# / Function		Arduino GPIO# / Function	Port	Pin#
1	TX				VBUS	48
2	RX				D-	47
3	GND				D+	46
4	PG5	4 / PWM4			GND	45
5	PE0	0 / USART0_RX			VCC	44
6	PE1	1 / USART0_TX			AREF	43
7	PE2	54		68 / A0	PF0	42
8	PE3	5 / PWM5		69 / A1	PF1	41
9	PE4	2 / PWM2		70 / A2	PF2	40
10	PE5	3 / PWM3		71 / A3	PF3	39
11	PE6	55		72 / A4	PF4	38
12	PE7	56		73 / A5	PF5	37
13	PH0	17 / USART2_RX		74 / A6	PF6	36
14	PH1	16 / USART2_TX		75 / A7	PF7	35
15	PH2	57		76 / A8	PK0	34
16	PH3	6 / PWM6		77 / A9	PK1	33
17	PH4	7 / PWM7		78 / A10	PK2	32
18	PH5	8 / PWM8		79 / A11	PK3	31
19	PH6	9 / PWM9		80 / A12	PK4	30
20	PH7	58		81 / A13	PK5	29
21	PB0	53 / SPI_SS		82 / A14	PK6	28
22	PB1	52 / SPI_SCK		83 / A15	PK7	27
23	PB2	51 / SPI_MOSI		22	PA0	26
24	PB3	50 / SPI_MISO		23	PA1	25
25	PB4	10 / PWM10		24	PA2	24
26	PB5	11 / PWM11		25	PA3	23
27	PB6	12 / PWM12		26	PA4	22
28	PB7	13 / PWM13		27	PA5	21
29	/RESET			28	PA6	20
30	PL0	49		29	PA7	19
31	PL1	48		39	PG2	18
32	PL2	47		66	PJ6	17
33	PL3	46		65	PJ5	16
34	PL4	45		64	PJ4	15
35	PL5	44		63	PJ3	14
36	PL6	43		62	PJ2	13
37	PL7	42		14 / USART3_TX	PJ1	12
38	PD0	21 / I2C_SCL		15 / USART3_RX	PJ0	11
39	PD1	20 / I2C_SDA		30	PC7	10
40	PD2	19 / USART1_RX		31	PC6	9
41	PD3	18 / USART1_TX		32	PC5	8
42	PD4	59		33	PC4	7
43	PD5	60		34	PC3	6
44	PD6	61		35	PC2	5
45	PD7	38		36	PC1	4
46	GND			37	PC0	3
47	A			40	PG1	2
48	B			41	PG0	1

Changelog

2021-MAR-14 (beegee-tokyo)

• Remap SPI bus to original GPIO numbers 50 to 53

2021-MAR-07 (beegee-tokyo)

• Initial release, based on original Arduino AVR