* i2c for omap5912,help me [not found] <20061130231453.48C468062D@linux.omap.com> @ 2006-12-08 6:51 ` 李玮 2006-12-08 18:04 ` Ishigami, Tatsuya 2006-12-10 7:16 ` David Brownell 0 siblings, 2 replies; 3+ messages in thread From: 李玮 @ 2006-12-08 6:51 UTC (permalink / raw) To: linux-omap-open-source [-- Attachment #1: Type: text/plain, Size: 690 bytes --] Hi , I'm using an omap5912 and would like to light the led D3 on the board thru the i2c driver. Now I can not see nothing in /proc/sys/dev/ and /dev, but I can see there is something about i2c in /proc/bus/. I can not open the file,Could there be something wrong with my opening the dev file ? I hope there is someone who knows my problem? Thanks in advance. Below are the debug msg aswell as the code. int adapter_nr = 0; int file; char filename[20]; sprintf(filename,"/dev/i2c-%d",adapter_nr); if ((file = open(filename,O_RDWR)) < 0) { printf("Error Opening File\n"); exit(1); } the file value is allways 1,Who can help me?Thanks! [-- Attachment #2: Type: text/plain, Size: 0 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: i2c for omap5912,help me 2006-12-08 6:51 ` i2c for omap5912,help me 李玮 @ 2006-12-08 18:04 ` Ishigami, Tatsuya 2006-12-10 7:16 ` David Brownell 1 sibling, 0 replies; 3+ messages in thread From: Ishigami, Tatsuya @ 2006-12-08 18:04 UTC (permalink / raw) To: 李玮, linux-omap-open-source Hi, Does this help? http://oskfordummies.hp.infoseek.co.jp/howto/led.html Regards, Ishigami -----Original Message----- From: 李玮 [mailto:coffeeyu531@126.com] Sent: Thursday, December 07, 2006 10:51 PM To: linux-omap-open-source@linux.omap.com Subject: i2c for omap5912,help me Hi , I'm using an omap5912 and would like to light the led D3 on the board thru the i2c driver. Now I can not see nothing in /proc/sys/dev/ and /dev, but I can see there is something about i2c in /proc/bus/. I can not open the file,Could there be something wrong with my opening the dev file ? I hope there is someone who knows my problem? Thanks in advance. Below are the debug msg aswell as the code. int adapter_nr = 0; int file; char filename[20]; sprintf(filename,"/dev/i2c-%d",adapter_nr); if ((file = open(filename,O_RDWR)) < 0) { printf("Error Opening File\n"); exit(1); } the file value is allways 1,Who can help me?Thanks! ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: i2c for omap5912,help me 2006-12-08 6:51 ` i2c for omap5912,help me 李玮 2006-12-08 18:04 ` Ishigami, Tatsuya @ 2006-12-10 7:16 ` David Brownell 1 sibling, 0 replies; 3+ messages in thread From: David Brownell @ 2006-12-10 7:16 UTC (permalink / raw) To: linux-omap-open-source; +Cc: 李玮 > I'm using an omap5912 and would like to light the led D3 > on the board thru the i2c driver. In the kernel, <asm/arch/tps65010.h> exports extern int tps65010_set_led(unsigned led, unsigned mode); extern int tps65010_set_gpio_out_value(unsigned gpio, unsigned value); which are used for those LEDs. D3 is connected to TPS65010 GPIO 2... ^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-12-08 6:51 ` i2c for omap5912,help me 李玮
2006-12-08 18:04 ` Ishigami, Tatsuya
2006-12-10 7:16 ` David Brownell
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