bsp/atsam: Add I2C driver

1 files changed, 64 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/atsam/i2c/atsam_i2c_init.c b/c/src/lib/libbsp/arm/atsam/i2c/atsam_i2c_init.c
new file mode 100644
index 0000000000..1c31fbe899
--- /dev/null
+++ b/c/src/lib/libbsp/arm/atsam/i2c/atsam_i2c_init.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <info@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <bsp/atsam-i2c.h>
+#include <bsp/i2c.h>
+
+/** TWI0 data pin */
+#define PIN_TWI_TWD0 {PIO_PA3A_TWD0, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
+/** TWI0 clock pin */
+#define PIN_TWI_TWCK0 {PIO_PA4A_TWCK0, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
+
+/** TWI1 data pin */
+#define PIN_TWI_TWD1 {PIO_PB4A_TWD1, PIOB, ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT}
+/** TWI1 clock pin */
+#define PIN_TWI_TWCK1 {PIO_PB5A_TWCK1, PIOB, ID_PIOB, PIO_PERIPH_A, PIO_DEFAULT}
+
+/** TWI2 data pin */
+#define PIN_TWI_TWD2 {PIO_PD27C_TWD2, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
+/** TWI2 clock pin */
+#define PIN_TWI_TWCK2 {PIO_PD28C_TWCK2, PIOD, ID_PIOD, PIO_PERIPH_C, PIO_DEFAULT}
+
+int atsam_register_i2c_0(void)
+{
+	static const Pin pins[] = {PIN_TWI_TWD0, PIN_TWI_TWCK0};
+
+	return i2c_bus_register_atsam(
+	    ATSAM_I2C_0_BUS_PATH,
+	    TWIHS0,
+	    ID_TWIHS0,
+	    pins);
+}
+
+int atsam_register_i2c_1(void)
+{
+	static const Pin pins[] = {PIN_TWI_TWD1, PIN_TWI_TWCK1};
+
+	return i2c_bus_register_atsam(
+	    ATSAM_I2C_1_BUS_PATH,
+	    TWIHS1,
+	    ID_TWIHS1,
+	    pins);
+}
+
+int atsam_register_i2c_2(void)
+{
+	static const Pin pins[] = {PIN_TWI_TWD2, PIN_TWI_TWCK2};
+
+	return i2c_bus_register_atsam(
+	    ATSAM_I2C_2_BUS_PATH,
+	    TWIHS2,
+	    ID_TWIHS2,
+	    pins);
+}