espressif_tinyusb/boards/ngx/board_ngx4330.c

/**************************************************************************/
/*!
    @file     board_ngx4330.c
    @author   hathach (tinyusb.org)

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2013, hathach (tinyusb.org)
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
    2. 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.
    3. Neither the name of the copyright holders 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 ''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 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 file is part of the tinyusb stack.
*/
/**************************************************************************/

#include "../board.h"

#if BOARD == BOARD_NGX4330

#define BOARD_UART_PORT           LPC_USART0

const static struct {
  uint8_t mux_port;
  uint8_t mux_pin;

  uint8_t gpio_port;
  uint8_t gpio_pin;
}leds[] = { {2, 11, 1, 11}, {2, 12, 1,12} };

enum {
  BOARD_MAX_LEDS = sizeof(leds) / sizeof(leds[0])
};

const static struct {
  uint8_t mux_port;
  uint8_t mux_pin;

  uint8_t gpio_port;
  uint8_t gpio_pin;
}buttons[] = { {0x02, 7, 0, 7 } };

enum {
  BOARD_BUTTON_COUNT = sizeof(buttons) / sizeof(buttons[0])
};

void board_init(void)
{
  CGU_Init();

#if TUSB_CFG_OS == TUSB_OS_NONE // TODO may move to main.c
  SysTick_Config( CGU_GetPCLKFrequency(CGU_PERIPHERAL_M4CORE)/TUSB_CFG_TICKS_HZ );	/* 1 ms Timer */
#endif

  //------------- USB Bus power HOST ONLY-------------//
  scu_pinmux(0x1, 7, MD_PUP | MD_EZI, FUNC4);	// P1_7 USB0_PWR_EN, USB0 VBus function Xplorer

  scu_pinmux(0x2, 6, MD_PUP | MD_EZI, FUNC4); // P2_6 is configured as GPIO5[6] for USB1_PWR_EN
  GPIO_SetDir   (5, BIT_(6), 1);              // GPIO5[6] is output
  GPIO_SetValue (5, BIT_(6));                 // GPIO5[6] output high

  //------------- LED -------------//
  for (uint8_t i=0; i<BOARD_MAX_LEDS; i++)
  {
    scu_pinmux(leds[i].mux_port, leds[i].mux_pin, MD_PUP|MD_EZI|MD_ZI, FUNC0);
    GPIO_SetDir(leds[i].gpio_port, BIT_(leds[i].gpio_pin), 1); // output
  }

  //------------- BUTTONS -------------//
  for(uint8_t i=0; i<BOARD_BUTTON_COUNT; i++)
  {
    scu_pinmux(buttons[i].mux_port, buttons[i].mux_pin, GPIO_NOPULL, FUNC0);
    GPIO_SetDir(buttons[i].gpio_port, BIT_(buttons[i].gpio_pin), 0);
  }

  //------------- UART init -------------//
  scu_pinmux(0x6 ,4, MD_PDN | MD_EZI, FUNC2); 	// UART0_TXD
  scu_pinmux(0x6 ,5, MD_PDN | MD_EZI, FUNC2); 	// UART0_RXD

  UART_CFG_Type UARTConfigStruct;
  UART_ConfigStructInit(&UARTConfigStruct);                   // default: baud = 9600, 8 bit data, 1 stop bit, no parity
  UARTConfigStruct.Baud_rate   = CFG_UART_BAUDRATE;           // Re-configure baudrate
  UARTConfigStruct.Clock_Speed = 0;

  UART_Init(BOARD_UART_PORT, &UARTConfigStruct);
  UART_TxCmd(BOARD_UART_PORT, ENABLE);           // Enable UART
}

//--------------------------------------------------------------------+
// LEDS
//--------------------------------------------------------------------+
void board_leds(uint32_t on_mask, uint32_t off_mask)
{
  for (uint32_t i=0; i<BOARD_MAX_LEDS; i++)
  {
    if ( on_mask & BIT_(i))
    {
      GPIO_SetValue(leds[i].gpio_port, BIT_(leds[i].gpio_pin));
    }else if ( off_mask & BIT_(i)) // on_mask take precedence over off_mask
    {
      GPIO_ClearValue(leds[i].gpio_port, BIT_(leds[i].gpio_pin));
    }
  }
}

//--------------------------------------------------------------------+
// BUTTONS
//--------------------------------------------------------------------+
static bool button_read(uint8_t id)
{
  return !BIT_TEST_( GPIO_ReadValue(buttons[id].gpio_port), buttons[id].gpio_pin ); // button is active low
}

uint32_t board_buttons(void)
{
  uint32_t result = 0;

  for(uint8_t i=0; i<BOARD_BUTTON_COUNT; i++) result |= (button_read(i) ? BIT_(i) : 0);

  return result;
}

//--------------------------------------------------------------------+
// UART
//--------------------------------------------------------------------+
uint8_t  board_uart_getchar(void)
{
  return UART_ReceiveByte(BOARD_UART_PORT);
}

void board_uart_putchar(uint8_t c)
{
  UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
}

#endif