GPIO identification

[anupsingh chandel]

Hello,

 

Recently I have started working with BBB. I have one doubt that how the controller understands the following:

Suppose I have to make the pin 12 of connector P8 high, than I have to include gpio44 into the gpio library. Why  44 ? How does this get defined ..? I struggled with Pin 14 of connector 8. Some literatures suggest that it is GPIO 40 but later on in groups I found that it is GPIO 50 and it worked. In schematic and SRM it is mentioned as GPIO1_18 and like that. Please help.

 

Regards,

Anup 

[John Syne]

P8 HEADER	LINUX PIN	ADDR/OFFSET	GPIO NO.	TRM NAME	MODE 7
P8_1
P8_2
P8_3	6	0x818/018	38	GPIO1_6	gpio1[6]
P8_4	7	0x81c/01c	39	GPIO1_7	gpio1[7]
P8_5	2	0x808/008	34	GPIO1_2	gpio1[2]
P8_6	3	0x80c/00c	35	GPIO1_3	gpio1[3]
P8_7	36	0x890/090	66	TIMER4	gpio2[2]
P8_8	37	0x894/094	67	TIMER7	gpio2[3]
P8_9	39	0x89c/09c	69	TIMER5	gpio2[5]
P8_10	38	0x898/098	68	TIMER6	gpio2[4]
P8_11	13	0x834/034	45	GPIO1_13	gpio1[13]
P8_12	12	0x830/030	44	GPIO1_12	gpio1[12]
P8_13	9	0x824/024	23	EHRPWM2B	gpio0[23]
P8_14	10	0x828/028	26	GPIO0_26	gpio0[26]
P8_15	15	0x83c/03c	47	GPIO1_15	gpio1[15]
P8_16	14	0x838/038	46	GPIO1_14	gpio1[14]
P8_17	11	0x82c/02c	27	GPIO0_27	gpio0[27]
P8_18	35	0x88c/08c	65	GPIO2_1	gpio2[1]
P8_19	8	0x820/020	22	EHRPWM2A	gpio0[22]
P8_20	33	0x884/084	63	GPIO1_31	gpio1[31]
P8_21	32	0x880/080	62	GPIO1_30	gpio1[30]
P8_22	5	0x814/014	37	GPIO1_5	gpio1[5]
P8_23	4	0x810/010	36	GPIO1_4	gpio1[4]
P8_24	1	0x804/004	33	GPIO1_1	gpio1[1]
P8_25	0	0x800/000	32	GPIO1_0	gpio1[0]
P8_26	31	0x87c/07c	61	GPIO1_29	gpio1[29]
P8_27	56	0x8e0/0e0	86	GPIO2_22	gpio2[22]
P8_28	58	0x8e8/0e8	88	GPIO2_24	gpio2[24]
P8_29	57	0x8e4/0e4	87	GPIO2_23	gpio2[23]
P8_30	59	0x8ec/0ec	89	GPIO2_25	gpio2[25]
P8_31	54	0x8d8/0d8	10	UART5_CTSN	gpio0[10]
P8_32	55	0x8dc/0dc	11	UART5_RTSN	gpio0[11]
P8_33	53	0x8d4/0d4	9	UART4_RTSN	gpio0[9]
P8_34	51	0x8cc/0cc	81	UART3_RTSN	gpio2[17]
P8_35	52	0x8d0/0d0	8	UART4_CTSN	gpio0[8]
P8_36	50	0x8c8/0c8	80	UART3_CTSN	gpio2[16]
P8_37	48	0x8c0/0c0	78	UART5_TXD	gpio2[14]
P8_38	49	0x8c4/0c4	79	UART5_RXD	gpio2[15]
P8_39	46	0x8b8/0b8	76	GPIO2_12	gpio2[12]
P8_40	47	0x8bc/0bc	77	GPIO2_13	gpio2[13]
P8_41	44	0x8b0/0b0	74	GPIO2_10	gpio2[10]
P8_42	45	0x8b4/0b4	75	GPIO2_11	gpio2[11]
P8_43	42	0x8a8/0a8	72	GPIO2_8	gpio2[8]
P8_44	43	0x8ac/0ac	73	GPIO2_9	gpio2[9]
P8_45	40	0x8a0/0a0	70	GPIO2_6	gpio2[6]
P8_46	41	0x8a4/0a4	71	GPIO2_7	gpio2[7]

44 is the Linux GPIO number.

Regards,

John

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[anupsingh chandel]

Hello John,

 

Thank you .

How to find this .?

II want to find this for P9 also, that's why..?

Please help.

 

Regards,

Anup

Keep smiling:)

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[John Syne]

P9 HEADER	LINUX PIN	ADDR/OFFSET	TRM NAME	GPIO NO.	MODE 7
P9_01			DGND
P9_02			DGND
P9_03			VDD_3V3B
P9_04			VDD_3V3B
P9_05			VDD_5V
P9_06			VDD_5V
P9_07			SYS_5V
P9_08			SYS_5V
P9_09			PWR_BUT
P9_10			SYS_RESETn
P9_11	28	0x870/070	UART4_RXD	30	gpio0[30]
P9_12	30	0x878/078	GPIO1_28	60	gpio1[28]
P9_13	29	0x874/074	UART4_TXD	31	gpio0[31]
P9_14	18	0x848/048	EHRPWM1A	50	gpio1[18]
P9_15A	16	0x840/040	GPIO1_16	48	gpio1[16]
P9_15B	34	0x888/088	GPIO1_16	64	gpio2(0)
P9_16	19	0x84c/04c	EHRPWM1B	51	gpio1[19]
P9_17	87	0x95c/15c	I2C1_SCL	5	gpio0[5]
P9_18	86	0x958/158	I2C1_SDA	4	gpio0[4]
P9_19	95	0x97c/17c	I2C2_SCL	13	gpio0[13]
P9_20	94	0x978/178	I2C2_SDA	12	gpio0[12]
P9_21	85	0x954/154	UART2_TXD	3	gpio0[3]
P9_22	84	0x950/150	UART2_RXD	2	gpio0[2]
P9_23	17	0x844/044	GPIO1_17	49	gpio1[17]
P9_24	97	0x984/184	UART1_TXD	15	gpio0[15]
P9_25A	107	0x9ac/1ac	GPIO3_21	117	gpio3[21]
P9_25B	27	0x86c/06c	GPIO1_27	59
P9_26	96	0x980/180	UART1_RXD	14	gpio0[14]
P9_27	105	0x9a4/1a4	GPIO3_19	115	gpio3[19]
P9_28	103	0x99c/19c	SPI1_CS0	113	gpio3[17]
P9_29	101	0x994/194	SPI1_D0	111	gpio3[15]
P9_30	102	0x998/198	SPI1_D1	112	gpio3[16]
P9_31	100	0x990/190	SPI1_SCLK	110	gpio3[14]
P9_32			VDD_ADC
P9_33			AIN4
P9_34			GNDA_ADC
P9_35			AIN6
P9_36			AIN5
P9_37			AIN2
P9_38			AIN3
P9_39			AIN0
P9_40			AIN1
P9_41A	109	0x9b4/1b4	CLKOUT2	20	gpio0[20]
P9_41B	106	0x9a8/1a8	CLKOUT2	116	gpio3[20]
P9_42A	89	0x964/164	GPIO0_7	7	gpio0[7]
P9_42B	104	0x9a0/1a0	GPIO0_7	114	gpio3[18]
P9_43			DGND
P9_44			DGND
P9_45			DGND
P9_46			DGND

Search Google for BBB Pinmux spreadsheet

Regards,

John