adafruit_bus_device: SPIDevice: Fix so it works with bitbangio.SPI

.. by calling methods, same as we did for I2C

Author: jepler

shared-module/adafruit_bus_device/SPIDevice.c

@@ -42,14 +42,28 @@ void common_hal_adafruit_bus_device_spidevice_construct(adafruit_bus_device_spid
 }
 
 mp_obj_t common_hal_adafruit_bus_device_spidevice_enter(adafruit_bus_device_spidevice_obj_t *self) {
-    bool success = false;
-    while (!success) {
-        success = common_hal_busio_spi_try_lock(self->spi);
-        RUN_BACKGROUND_TASKS;
-        mp_handle_pending();
+    {
+        mp_obj_t dest[2];
+        mp_load_method(self->spi, MP_QSTR_try_lock, dest);
+
+        while (!mp_obj_is_true(mp_call_method_n_kw(0, 0, dest))) {
+            mp_handle_pending();
+        }
     }
 
-    common_hal_busio_spi_configure(self->spi, self->baudrate, self->polarity, self->phase, 8);
+    {
+        mp_obj_t dest[10];
+        mp_load_method(self->spi, MP_QSTR_configure, dest);
+        dest[2] = MP_OBJ_NEW_QSTR(MP_QSTR_baudrate);
+        dest[3] = MP_OBJ_NEW_SMALL_INT(self->baudrate);
+        dest[4] = MP_OBJ_NEW_QSTR(MP_QSTR_polarity);
+        dest[5] = MP_OBJ_NEW_SMALL_INT(self->polarity);
+        dest[6] = MP_OBJ_NEW_QSTR(MP_QSTR_phase);
+        dest[7] = MP_OBJ_NEW_SMALL_INT(self->phase);
+        dest[8] = MP_OBJ_NEW_QSTR(MP_QSTR_bits);
+        dest[9] = MP_OBJ_NEW_SMALL_INT(8);
+        mp_call_method_n_kw(0, 4, dest);
+    }
 
     if (self->chip_select != MP_OBJ_NULL) {
         common_hal_digitalio_digitalinout_set_value(MP_OBJ_TO_PTR(self->chip_select), false);
@@ -67,21 +81,21 @@ void common_hal_adafruit_bus_device_spidevice_exit(adafruit_bus_device_spidevice
         mp_buffer_info_t bufinfo;
         mp_obj_t buffer = mp_obj_new_bytearray_of_zeros(1);
 
-        mp_get_buffer_raise(buffer, &bufinfo, MP_BUFFER_READ);
+        mp_get_buffer_raise(buffer, &bufinfo, MP_BUFFER_WRITE);
         ((uint8_t *)bufinfo.buf)[0] = 0xFF;
 
-        uint8_t clocks = self->extra_clocks / 8;
-        if ((self->extra_clocks % 8) != 0) {
-            clocks += 1;
-        }
+        uint8_t clocks = (self->extra_clocks + 7) / 8;
 
+        mp_obj_t dest[3];
+        mp_load_method(self->spi, MP_QSTR_write, dest);
+        dest[2] = buffer;
         while (clocks > 0) {
-            if (!common_hal_busio_spi_write(self->spi, ((uint8_t *)bufinfo.buf), 1)) {
-                mp_raise_OSError(MP_EIO);
-            }
+            mp_call_method_n_kw(1, 0, dest);
             clocks--;
         }
     }
 
-    common_hal_busio_spi_unlock(self->spi);
+    mp_obj_t dest[2];
+    mp_load_method(self->spi, MP_QSTR_unlock, dest);
+    mp_call_method_n_kw(0, 0, dest);
 }