diff options
| author | Gregory Nutt <gnutt@nuttx.org> | 2014-04-26 13:58:38 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-04-26 13:58:38 -0600 |
| commit | a003b3b5a00f417a1f6df8811c404a82626e94b4 (patch) | |
| tree | 464fd7c176f01c4d3586c1a6410544b94af92f23 /nuttx/arch/z16 | |
| parent | ef04398d2597c3c726de8d197b1a357061d4a3df (diff) | |
| download | nuttx-a003b3b5a00f417a1f6df8811c404a82626e94b4.tar.gz nuttx-a003b3b5a00f417a1f6df8811c404a82626e94b4.tar.bz2 nuttx-a003b3b5a00f417a1f6df8811c404a82626e94b4.zip | |
Zneo: ESPI needs to configure GPIO for ESPI
Diffstat (limited to 'nuttx/arch/z16')
| -rw-r--r-- | nuttx/arch/z16/src/z16f/z16f_espi.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/nuttx/arch/z16/src/z16f/z16f_espi.c b/nuttx/arch/z16/src/z16f/z16f_espi.c index e0366f3b3..acbb38e25 100644 --- a/nuttx/arch/z16/src/z16f/z16f_espi.c +++ b/nuttx/arch/z16/src/z16f/z16f_espi.c @@ -838,9 +838,9 @@ struct spi_dev_s *up_spiinitialize(int port) FAR struct z16f_spi_s *priv; irqstate_t flags; #ifndef CONFIG_SPI_OWNBUS - uint8_t regval; unsigned int offset; #endif + uint8_t regval; spivdbg("port: %d\n", port); DEBUGASSERT(port == 0); @@ -858,6 +858,22 @@ struct spi_dev_s *up_spiinitialize(int port) sem_init(&priv->exclsem, 0, 1); #endif + /* Set up the SPI pin configuration (board-specific logic is required to + * configure and manage all chip selects). + * + * SCK - PC3, Alternate function 1 + * MOSI - PC4, Alternate function 1 + * MISO - PC5, Alternate function 1 + */ + + regval = getreg8(Z16F_GPIOC_AFL); + regval |= 0x38; + putreg8(regval, Z16F_GPIOC_AFL); + + regval = getreg8(Z16F_GPIOC_AFH); + regval &= ~0x38; + putreg8(regval, Z16F_GPIOC_AFH); + /* Initialize the hardware. Mode 0, 8-bits, 400KHz */ spi_putreg8(priv, 0x00, Z16F_ESPI_CTL); /* Disabled the ESPI */ |