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Diffstat (limited to 'board/src/board.c')
| -rw-r--r-- | board/src/board.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/board/src/board.c b/board/src/board.c new file mode 100644 index 0000000..ba853ad --- /dev/null +++ b/board/src/board.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2013 - 2016, 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. + */ + +/* This is a template for board specific configuration created by New Kinetis SDK 2.x Project Wizard. Enjoy! */ + +#include <stdint.h> +#include "board.h" +#include "fsl_debug_console.h" + +/*! + * @brief initialize debug console to enable printf for this demo/example + */ +void BOARD_InitDebugConsole(void) { + uint32_t uartClkSrcFreq = BOARD_DEBUG_UART_CLK_FREQ; + +#ifdef USE_SWO + uint32_t SWOSpeed = 1000000; /* default 64k baud rate */ + uint32_t SWOPrescaler = (uartClkSrcFreq / SWOSpeed) - 1; /* SWOSpeed in Hz, note that cpuCoreFreqHz is expected to be match the CPU core clock */ + CoreDebug->DEMCR = CoreDebug_DEMCR_TRCENA_Msk; /* enable trace in core debug */ + *((volatile unsigned *)(ITM_BASE + 0x400F0)) = 0x00000002; /* "Selected PIN Protocol Register": Select which protocol to use for trace output (2: SWO NRZ, 1: SWO Manchester encoding) */ + *((volatile unsigned *)(ITM_BASE + 0x40010)) = SWOPrescaler; /* "Async Clock Prescaler Register". Scale the baud rate of the asynchronous output */ + *((volatile unsigned *)(ITM_BASE + 0x00FB0)) = 0xC5ACCE55; /* ITM Lock Access Register, C5ACCE55 enables more write access to Control Register 0xE00 :: 0xFFC */ + ITM->TCR = ITM_TCR_TraceBusID_Msk | ITM_TCR_SWOENA_Msk | ITM_TCR_SYNCENA_Msk | ITM_TCR_ITMENA_Msk; /* ITM Trace Control Register */ + ITM->TPR = ITM_TPR_PRIVMASK_Msk; /* ITM Trace Privilege Register */ + ITM->TER = 0x01; /* ITM Trace Enable Register. Enabled tracing on stimulus ports. One bit per stimulus port. */ + *((volatile unsigned *)(ITM_BASE + 0x01000)) = 0x400003FE; /* DWT_CTRL */ + *((volatile unsigned *)(ITM_BASE + 0x40304)) = 0x00000100; /* Formatter and Flush Control Register */ + +#endif + +DbgConsole_Init(BOARD_DEBUG_UART_BASEADDR, BOARD_DEBUG_UART_BAUDRATE, BOARD_DEBUG_UART_TYPE, uartClkSrcFreq); +} + |