[riot-notifications] [RIOT-OS/RIOT] sys/arduino: Added SPI interface (#12118)

Marian Buschsieweke notifications at github.com
Sun Sep 8 10:19:11 CEST 2019

maribu commented on this pull request.

> +     * @brief   Transfer a single byte of data
+     * @param[in]   data        Byte to send
+     * @return  The received byte
+     */
+    uint8_t transfer(uint8_t data) {
+        transfer(&data, sizeof(data));
+        return data;
+    }
+    /**
+     * @brief   Transfer two bytes of data
+     * @param[in]       data        The two bytes to send
+     * @return  The received two bytes
+     */
+    uint16_t transfer16(uint16_t data) {
+        transfer(&data, sizeof(data));

I'll check the Arduino implementation on the byteorder here. Thanks for pointing that out.

`bitOrder` is about which bit is first send over the wire. I think today it safe to assune msb first. But we can add lsb first later, if a use case still popa up

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