Initial commit

3 files changed, 141 insertions, 0 deletions

diff --git a/shared-module/busdevice/I2CDevice.c b/shared-module/busdevice/I2CDevice.c
new file mode 100644
index 000000000..30f4aad33
--- /dev/null
+++ b/shared-module/busdevice/I2CDevice.c
@@ -0,0 +1,101 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-bindings/busdevice/I2CDevice.h"
+#include "shared-bindings/busio/I2C.h"
+#include "py/mperrno.h"
+#include "py/nlr.h"
+
+void common_hal_busdevice_i2cdevice_construct(busdevice_i2cdevice_obj_t *self, busio_i2c_obj_t *i2c, uint8_t device_address, bool probe) {
+    self->i2c = i2c;
+    self->device_address = device_address;
+    self->probe = probe;
+
+    if (self->probe == true) {
+        common_hal_busdevice_i2cdevice___probe_for_device(self);
+    }
+}
+
+void common_hal_busdevice_i2cdevice_lock(busdevice_i2cdevice_obj_t *self) {
+    bool success = false;
+    while (!success) {
+        success = common_hal_busio_i2c_try_lock(self->i2c);
+    }
+}
+
+void common_hal_busdevice_i2cdevice_unlock(busdevice_i2cdevice_obj_t *self) {
+    common_hal_busio_i2c_unlock(self->i2c);
+}
+
+uint8_t common_hal_busdevice_i2cdevice_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) {
+    uint8_t status = common_hal_busio_i2c_read(self->i2c, self->device_address, buffer, length);
+
+    return status;
+}
+
+uint8_t common_hal_busdevice_i2cdevice_write(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) {
+    uint8_t status = common_hal_busio_i2c_write(self->i2c, self->device_address, buffer, length, true);
+
+    return status;
+}
+
+uint8_t common_hal_busdevice_i2cdevice_write_then_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t out_buffer, mp_obj_t in_buffer,
+                    size_t out_length, size_t in_length) {
+    uint8_t status = 0;
+
+    status = common_hal_busio_i2c_write(self->i2c, self->device_address, out_buffer, out_length, true);
+
+    status = common_hal_busio_i2c_read(self->i2c, self->device_address, in_buffer, in_length);
+
+    return status;
+}
+
+uint8_t common_hal_busdevice_i2cdevice___probe_for_device(busdevice_i2cdevice_obj_t *self) {
+
+
+
+
+    // write ""
+
+
+/*
+            while not self.i2c.try_lock():
+            pass
+        try:
+            self.i2c.writeto(self.device_address, b"")
+        except OSError:
+            # some OS's dont like writing an empty bytesting...
+            # Retry by reading a byte
+            try:
+                result = bytearray(1)
+                self.i2c.readfrom_into(self.device_address, result)
+            except OSError:
+                raise ValueError("No I2C device at address: %x" % self.device_address)
+        finally:
+            self.i2c.unlock()
+*/
+    return 0;
+}
diff --git a/shared-module/busdevice/I2CDevice.h b/shared-module/busdevice/I2CDevice.h
new file mode 100644
index 000000000..c872704db
--- /dev/null
+++ b/shared-module/busdevice/I2CDevice.h
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H
+
+#include "py/obj.h"
+#include "common-hal/busio/I2C.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    busio_i2c_obj_t *i2c;
+    uint8_t device_address;
+    bool probe;
+} busdevice_i2cdevice_obj_t;
+
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H
diff --git a/shared-module/busdevice/__init__.c b/shared-module/busdevice/__init__.c
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/shared-module/busdevice/__init__.c