150 lines
5.0 KiB
C
150 lines
5.0 KiB
C
/****************************************************************************
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* boards/mips/pic32mx/mirtoo/src/pic32_boot.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <debug.h>
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#include <arch/board/board.h>
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#include "mips_internal.h"
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#include "pic32mx.h"
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#include "pic32mx_pps.h"
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#include "mirtoo.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define GPIO_U1TX (GPIO_OUTPUT|GPIO_PORTC|GPIO_PIN5)
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#define GPIO_U1RX (GPIO_INPUT|GPIO_PORTC|GPIO_PIN6)
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#define GPIO_U2TX (GPIO_OUTPUT|GPIO_PORTB|GPIO_PIN10)
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#define GPIO_U2RX (GPIO_INPUT|GPIO_PORTB|GPIO_PIN11)
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pic32mx_uartinitialize
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*
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* Description:
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* When mounted on the DTX1-4000L EV-kit1 board, serial output is available
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* through an FT230X device via the FUNC0 and FUNC1 module outputs.
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* If CONFIG_PIC32MX_UART2 is enabled, the src/pic32_boot will configure
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* the UART2 pins as follows.
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*
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* ---------- ------ ----- ------ -------------------------
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* BOARD OUTPUT PIN SIGNAL NOTES
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* ---------- ------ ----- ------ -------------------------
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* FT230X RXD FUNC0 RPB11 U2RX UART2 RX (Also PGEC2)
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* FT230X TXD FUNC1 RPB10 U2TX UART2 TX (Also PGED2)
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*
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* If CONFIG_PIC32MX_UART1 is enabled,
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* the src/pic32_boot will configure the UART pins as follows.
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* This will support communictions (via an external RS-232
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* driver) through X3 pins 4 and 5:
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*
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* ---------- ------ ----- ------ -------------------------
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* BOARD MODULE PIN SIGNAL NOTES
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* ---------- ------ ----- ------ -------------------------
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* X3, pin 4 FUNC4 RPBC5 U1TX UART1 TX
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* X3, pin 5 FUNC5 RPBC6 U1RX UART1 RX
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*
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****************************************************************************/
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static inline void pic32mx_uartinitialize(void)
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{
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#ifdef CONFIG_PIC32MX_UART2
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/* Make sure that TRIS pins are set correctly.
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* Configure the UART pins as digital inputs and outputs first.
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*/
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pic32mx_configgpio(GPIO_U2TX);
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pic32mx_configgpio(GPIO_U2RX);
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/* Configure UART TX and RX pins to RPB10 and 11, respectively */
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putreg32(PPS_INSEL_RPB11, PIC32MX_PPS_U2RXR);
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putreg32(PPS_OUTSEL_U2TX, PIC32MX_PPS_RPB10R);
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#endif
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#ifdef CONFIG_PIC32MX_UART1
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/* Make sure that TRIS pins are set correctly.
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* Configure the UART pins as digital inputs and outputs first.
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*/
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pic32mx_configgpio(GPIO_U1TX);
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pic32mx_configgpio(GPIO_U1RX);
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/* Configure UART TX and RX pins to RPB10 and 11, respectively */
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putreg32(PPS_INSEL_RPC6, PIC32MX_PPS_U1RXR);
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putreg32(PPS_OUTSEL_U1TX, PIC32MX_PPS_RPC5R);
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#endif
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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: pic32mx_boardinitialize
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*
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* Description:
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* All PIC32MX architectures must provide the following entry point.
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* This entry point is called early in the initialization -- after all
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* memory has been configured and mapped but before any devices have been
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* initialized.
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*
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****************************************************************************/
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void pic32mx_boardinitialize(void)
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{
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/* Configure the console UART */
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pic32mx_uartinitialize();
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/* Configure SPI chip selects if 1) at least one SPI is enabled, and 2)
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* the weak function pic32mx_spi2initialize() has been brought into the
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* link.
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*/
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#ifdef CONFIG_PIC32MX_SPI2
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if (pic32mx_spi2initialize)
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{
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pic32mx_spi2initialize();
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}
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#endif
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/* Configure on-board LEDs if LED support has been selected. */
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#ifdef CONFIG_ARCH_LEDS
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pic32mx_led_initialize();
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#endif
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}
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