143 lines
4.9 KiB
C
143 lines
4.9 KiB
C
/************************************************************************************
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* configs/cc3200/src/cc3200_serial.c
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*
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* Copyright (C) 2013 Droidifi LLC. All rights reserved.
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* Author: Jim Ewing <jim@droidifi.com>
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*
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* Adapted for the cc3200 from code:
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*
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* Copyright (C) Gregory Nutt.
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* Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <arch/board/cc3200_utils.h>
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#include "chip/cc3200_memorymap.h"
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#include "tiva_start.h"
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#include "up_arch.h"
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#include "up_internal.h"
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#include "cc3200_launchpad.h"
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#if !defined(HAVE_SERIALCONSOLE)
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#ifndef CONFIG_TIVA_BOARD_EARLYINIT
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# error CONFIG_TIVA_BOARD_EARLYINIT is required
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#endif
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/************************************************************************************
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* Private Data
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************************************************************************************/
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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static void cc3200_uart0_init(void)
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{
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putreg32(getreg32(0x44025080) | 0x01, 0x44025080);
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cc3200_pin_type_uart(PIN_55, PIN_MODE_3);
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cc3200_pin_type_uart(PIN_57, PIN_MODE_3);
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while(getreg32(0x4000C018) & 0x08)
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{
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}
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putreg32(getreg32(0x4000C02C) & ~(0x00000010), 0x4000C02C);
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putreg32(getreg32(0x4000C030) & ~(0x01 | 0x100 | 0x200), 0x4000C030);
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putreg32(getreg32(0x4000C030) & ~(0x20), 0x4000C030);
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putreg32(((((80000000 * 8) / 115200) + 1) / 2) / 64, 0x4000C024);
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putreg32(((((80000000 * 8) / 115200) + 1) / 2) % 64, 0x4000C028);
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putreg32((0x60 | 0x82 | 0x10), 0x4000C02C);
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putreg32(getreg32(0x4000C030) | (0x01 | 0x100 | 0x200), 0x4000C030);
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}
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: board_earlyinit
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*
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* Description:
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* Performs the low level UART initialization early in debug so that the serial
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* console will be available during bootup. This must be called before
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* up_consoleinit.
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*
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************************************************************************************/
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void board_earlyinit(void)
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{
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cc3200_init();
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cc3200_uart0_init();
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}
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/************************************************************************************
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* Name: up_consoleinit
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*
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* Description:
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* Register serial console and serial ports. This assumes that
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* board_earlyinit was called previously.
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*
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************************************************************************************/
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#if USE_SERIALDRIVER
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void up_consoleinit(void)
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{
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/* There is probably a problem if we are here */
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lowconsole_init();
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}
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#endif
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/************************************************************************************
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* Name: cc3200_uart_init
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************************************************************************************/
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void cc3200_uart_init(void)
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{
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cc3200_uart0_init();
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}
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#endif /* !HAVE_SERIALCONSOLE && CONFIG_ARCH_LCD */
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