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i2c: add busnum to context

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
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Brendan Le Foll
2014-12-10 00:33:34 +00:00
parent 836d953cb7
commit ab3af9cc2d
2 changed files with 2 additions and 0 deletions
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1
include/mraa_internal_types.h
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@@ -56,6 +56,7 @@ struct _gpio {
*/ */
struct _i2c { struct _i2c {
/*@{*/ /*@{*/
int busnum; /**< the bus number of the /dev/i2c-* device */
int fh; /**< the file handle to the /dev/i2c-* device */ int fh; /**< the file handle to the /dev/i2c-* device */
int addr; /**< the address of the i2c slave */ int addr; /**< the address of the i2c slave */
/*@}*/ /*@}*/

1
src/i2c/i2c.c
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@@ -119,6 +119,7 @@ mraa_i2c_init_raw(unsigned int bus)
} }
char filepath[32]; char filepath[32];
dev->busnum = bus;
snprintf(filepath, 32, "/dev/i2c-%u", bus); snprintf(filepath, 32, "/dev/i2c-%u", bus);
if ((dev->fh = open(filepath, O_RDWR)) < 1) { if ((dev->fh = open(filepath, O_RDWR)) < 1) {
syslog(LOG_ERR, "i2c: Failed to open requested i2c port %s", filepath); syslog(LOG_ERR, "i2c: Failed to open requested i2c port %s", filepath);