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i2c: disallow non allowed i2c buses

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Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-07-24 11:51:38 +01:00
committed by Brendan Le Foll
parent 9a60d2ee63
commit f9e6a6efd4
1 changed files with 6 additions and 1 deletions
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7
src/mraa.c
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@@ -185,7 +185,7 @@ mraa_setup_i2c(int bus)
if (plat == NULL)
return -3;
if (plat->i2c_bus_count >! 0) {
if (plat->i2c_bus_count == 0) {
fprintf(stderr, "No i2c buses defined in platform");
return -1;
}
@@ -194,6 +194,11 @@ mraa_setup_i2c(int bus)
return -1;
}
if (plat->i2c_bus[bus].bus_id == -1) {
fprintf(stderr, "Platform not currently allowed for mraa use\n");
return -1;
}
int pos = plat->i2c_bus[bus].sda;
if (plat->pins[pos].i2c.mux_total > 0)
if (mraa_setup_mux_mapped(plat->pins[pos].i2c) != MRAA_SUCCESS)