Fixes SPI mode setting (Issue espressif#1094) (espressif#1096)

Fixes espressif#1094

Author: kroggen

cores/esp32/esp32-hal-spi.c

@@ -309,9 +309,9 @@ uint8_t spiGetDataMode(spi_t * spi)
     bool outEdge = spi->dev->user.ck_out_edge;
     if(idleEdge) {
         if(outEdge) {
-            return SPI_MODE3;
+            return SPI_MODE2;
         }
-        return SPI_MODE2;
+        return SPI_MODE3;
     }
     if(outEdge) {
         return SPI_MODE1;
@@ -713,11 +713,11 @@ void spiTransaction(spi_t * spi, uint32_t clockDiv, uint8_t dataMode, uint8_t bi
             break;
         case SPI_MODE2:
             spi->dev->pin.ck_idle_edge = 1;
-            spi->dev->user.ck_out_edge = 0;
+            spi->dev->user.ck_out_edge = 1;
             break;
         case SPI_MODE3:
             spi->dev->pin.ck_idle_edge = 1;
-            spi->dev->user.ck_out_edge = 1;
+            spi->dev->user.ck_out_edge = 0;
             break;
         case SPI_MODE0:
         default: