raiden00pl commented on a change in pull request #2270:
URL: https://github.com/apache/incubator-nuttx/pull/2270#discussion_r520766478
##########
File path: arch/arm/src/nrf52/nrf52_spi.c
##########
@@ -404,6 +425,71 @@ static int nrf52_spi_isr(int irq, FAR void *context, FAR
void *arg)
}
#endif
+/****************************************************************************
+ * Name: nrf52_spi_init
+ *
+ * Description:
+ * Configure SPI
+ *
+ ****************************************************************************/
+
+static int nrf52_spi_init(FAR struct nrf52_spidev_s *priv)
+{
+ /* Disable SPI */
+
+ nrf52_spi_putreg(priv, NRF52_SPIM_ENABLE_OFFSET, SPIM_ENABLE_DIS);
+
+ /* Configure SPI pins */
+
+ nrf52_spi_gpioinit(priv);
+
+ /* NOTE: Chip select pin must be configured by board-specific logic */
+
+#ifdef CONFIG_NRF52_SPI_MASTER_INTERRUPTS
+ /* Enable interrupts for RX and TX done */
+
+ nrf52_spi_putreg(priv, NRF52_SPIM_INTENSET_OFFSET, SPIM_INT_END);
+#endif
+
+ /* Enable SPI */
+
+ nrf52_spi_putreg(priv, NRF52_SPIM_ENABLE_OFFSET, SPIM_ENABLE_EN);
+
+ return OK;
+}
+
+#ifdef CONFIG_PM
+/****************************************************************************
+ * Name: nrf52_spi_deinit
+ *
+ * Description:
+ * Configure SPI
+ *
+ ****************************************************************************/
+
+static int nrf52_spi_deinit(FAR struct nrf52_spidev_s *priv)
+{
+ /* Disable SPI */
+
+ nrf52_spi_putreg(priv, NRF52_SPIM_ENABLE_OFFSET, SPIM_ENABLE_DIS);
+
+ /* Apply workaround for errata 89 (replace dummy read by barrier to avoid
Review comment:
Fortunately, there are no significant differences between the nrf52
chips. Usually we find them in errata, where bugs from old chips are often
fixed but new bugs are introduced :P
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