diff options
Diffstat (limited to 'src/atsam/i2c.c')
| -rw-r--r-- | src/atsam/i2c.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/atsam/i2c.c b/src/atsam/i2c.c index bbe9de32..f2a5a4c8 100644 --- a/src/atsam/i2c.c +++ b/src/atsam/i2c.c @@ -12,16 +12,21 @@ #include "sched.h" // sched_shutdown // I2C pin definitions +DECL_ENUMERATION_RANGE("i2c_bus", "twi0", 0, 2); #if CONFIG_MACH_SAM3X #define TWI0_SCL_GPIO GPIO('A', 18) #define TWI0_SDA_GPIO GPIO('A', 17) #define TWI1_SCL_GPIO GPIO('B', 13) #define TWI1_SDA_GPIO GPIO('B', 12) +DECL_CONSTANT_STR("BUS_PINS_twi0", "PA18,PA17"); +DECL_CONSTANT_STR("BUS_PINS_twi1", "PB13,PB12"); #elif CONFIG_MACH_SAM4 #define TWI0_SCL_GPIO GPIO('A', 4) #define TWI0_SDA_GPIO GPIO('A', 3) #define TWI1_SCL_GPIO GPIO('B', 5) #define TWI1_SDA_GPIO GPIO('B', 4) +DECL_CONSTANT_STR("BUS_PINS_twi0", "PA4,PA3"); +DECL_CONSTANT_STR("BUS_PINS_twi1", "PB5,PB4"); #endif static void @@ -89,7 +94,7 @@ addr_to_u32(uint8_t addr_len, uint8_t *addr) struct i2c_config i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr) { - if ((bus > 1) | (rate > 400000)) + if (bus > 1 || rate > 400000) shutdown("Invalid i2c_setup parameters!"); Twi *p_twi = (bus == 0) ? TWI0 : TWI1; i2c_init(p_twi, rate); |