From b8d1385b869106b9b45ce0faf6f2c66e35481e04 Mon Sep 17 00:00:00 2001 From: Raul Munoz Date: Mon, 20 Feb 2017 16:36:28 -0300 Subject: spi: example: add SPI example Add interrupt and polling examples based on the stander colibri SPI (ECSPI3). SODIMM_88 - SPI CLK SODIMM_92 - SPI TXD SODIMM_90 - SPI RXD SODIMM_86 - SPI CS To test this example, connect SODIMM_92 to SODIMM_90 in order to create a loop back. Signed-off-by: Raul Munoz Signed-off-by: Stefan Agner --- .../ecspi/ecspi_interrupt/master/hardware_init.c | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 examples/imx7_colibri_m4/driver_examples/ecspi/ecspi_interrupt/master/hardware_init.c (limited to 'examples/imx7_colibri_m4/driver_examples/ecspi/ecspi_interrupt/master/hardware_init.c') diff --git a/examples/imx7_colibri_m4/driver_examples/ecspi/ecspi_interrupt/master/hardware_init.c b/examples/imx7_colibri_m4/driver_examples/ecspi/ecspi_interrupt/master/hardware_init.c new file mode 100644 index 0000000..7ba46bc --- /dev/null +++ b/examples/imx7_colibri_m4/driver_examples/ecspi/ecspi_interrupt/master/hardware_init.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * o Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * + * o Redistributions in binary form must reproduce the above copyright notice, this + * list of conditions and the following disclaimer in the documentation and/or + * other materials provided with the distribution. + * + * o Neither the name of Freescale Semiconductor, Inc. nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "board.h" +#include "pin_mux.h" + +void hardware_init(void) +{ + /* Board specific RDC settings */ + BOARD_RdcInit(); + /* Board specific clock settings */ + BOARD_ClockInit(); + /* initialize debug uart */ + dbg_uart_init(); + + /* RDC ECSPI */ + RDC_SetPdapAccess(RDC, BOARD_ECSPI_RDC_PDAP, 3 << (BOARD_DOMAIN_ID * 2), false, false); + /* Select board ecspi clock derived from OSC clock(24M) */ + CCM_UpdateRoot(CCM, BOARD_ECSPI_CCM_ROOT, ccmRootmuxEcspiOsc24m, 0, 0); + /* Enable ecspi clock gate */ + CCM_EnableRoot(CCM, BOARD_ECSPI_CCM_ROOT); + CCM_ControlGate(CCM, BOARD_ECSPI_CCM_CCGR, ccmClockNeededAll); + /* Configure ecspi pin IOMUX */ + configure_ecspi_pins(BOARD_ECSPI_BASEADDR); +} + +/******************************************************************************* + * EOF + ******************************************************************************/ -- cgit v1.2.3