Merge pull request #51 from KurtE/T4_SPI_PIN_CONFIG

T4 Pin configuration.

SPI.cpp

@@ -1280,7 +1280,7 @@ void SPIClass::begin()
 	CCM_CBCMR = (CCM_CBCMR & ~(CCM_CBCMR_LPSPI_PODF_MASK | CCM_CBCMR_LPSPI_CLK_SEL_MASK)) |
 		CCM_CBCMR_LPSPI_PODF(6) | CCM_CBCMR_LPSPI_CLK_SEL(2); // pg 714
 
-	uint32_t fastio = IOMUXC_PAD_SRE | IOMUXC_PAD_DSE(3) | IOMUXC_PAD_SPEED(3);
+	uint32_t fastio = IOMUXC_PAD_DSE(6) | IOMUXC_PAD_SPEED(1);
 	//uint32_t fastio = IOMUXC_PAD_DSE(3) | IOMUXC_PAD_SPEED(3);
 	//Serial.printf("SPI MISO: %d MOSI: %d, SCK: %d\n", hardware().miso_pin[miso_pin_index], hardware().mosi_pin[mosi_pin_index], hardware().sck_pin[sck_pin_index]);
 	*(portControlRegister(hardware().miso_pin[miso_pin_index])) = fastio;