diff options
Diffstat (limited to 'examples/imx7_colibri_m4/demo_apps/blinking_imx_demo/hardware_init.c')
-rw-r--r-- | examples/imx7_colibri_m4/demo_apps/blinking_imx_demo/hardware_init.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/examples/imx7_colibri_m4/demo_apps/blinking_imx_demo/hardware_init.c b/examples/imx7_colibri_m4/demo_apps/blinking_imx_demo/hardware_init.c new file mode 100644 index 0000000..df4fbdb --- /dev/null +++ b/examples/imx7_colibri_m4/demo_apps/blinking_imx_demo/hardware_init.c @@ -0,0 +1,76 @@ +/* + * 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 "gpio_pins.h" +#include "board.h" + +void hardware_init(void) +{ + /* Board specific RDC settings */ + BOARD_RdcInit(); + /* Board specific clock settings */ + BOARD_ClockInit(); + /* initialize debug uart */ + dbg_uart_init(); + + /* In this demo, we need to grasp board GPT exclusively */ + RDC_SetPdapAccess(RDC, BOARD_GPTA_RDC_PDAP, 3 << (BOARD_DOMAIN_ID * 2), false, false); + + /* In this demo, we need to access RDC SEMAPHORE1 on this board */ + RDC_SetPdapAccess(RDC, rdcPdapSemaphore1, 0xFF, false, false); + + /* In this demo, we need to share board GPIO, we can set sreq argument to true + * when the peer core could also access GPIO with RDC_SEMAPHORE, or the peer + * core doesn't access the GPIO at all */ + RDC_SetPdapAccess(RDC, BOARD_GPIO_KEY_RDC_PDAP, 0xFF, false/*true*/, false); + + /* Enable PLL PFD0 for GPTA */ + CCM_ControlGate(CCM, ccmPllGateSys, ccmClockNeededRunWait); + CCM_ControlGate(CCM, ccmPllGatePfd0, ccmClockNeededRunWait); + + /* Select GPTA clock derived from PLL PFD0 */ + CCM_UpdateRoot(CCM, BOARD_GPTA_CCM_ROOT, ccmRootmuxGptSysPllPfd0, 0, 0); + /* Enable clock used by GPTA */ + CCM_EnableRoot(CCM, BOARD_GPTA_CCM_ROOT); + CCM_ControlGate(CCM, BOARD_GPTA_CCM_CCGR, ccmClockNeededRunWait); + + /* Enable RDC SEMAPHORE GATE needed in this demo */ + CCM_ControlGate(CCM, ccmCcgrGateSema1, ccmClockNeededRunWait); + + /* Enable gpio clock gate, led and key share same CCGR on this board */ + CCM_ControlGate(CCM, BOARD_GPIO_CCM_CCGR, ccmClockNeededRunWait); + + /* Configure gpio pin IOMUX */ + configure_gpio_pin(BOARD_GPIO_KEY_CONFIG); +} + +/******************************************************************************* + * EOF + ******************************************************************************/ |