board_lpc4357usb.c

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/**************************************************************************/
/**************************************************************************/

#include "../board.h"

#if BOARD == BOARD_LPC4357USB

#define BOARD_UART_PORT       (LPC_USART0)
#define BOARD_UART_PIN_PORT   (0x0F)
#define BOARD_UART_PIN_TX     (10) // PF.10 : UART0_TXD
#define BOARD_UART_PIN_RX     (11) // PF.11 : UART0_RXD

#define BOARD_LED0_PORT       (0x0C)
#define BOARD_LED0_PIN        (2)   // PC.2 = User LED
#define BOARD_LED0_FUNCTION   (4)   // GPIO multiplexed as function 4 on PC.2
#define BOARD_LED0_GPIO_PORT  (6)
#define BOARD_LED0_GPIO_PIN   (1)   // PC.2 = GPIO 6[1]

void board_init(void)
{
  CGU_Init();

  /* Setup the systick time for 1ms ticks */
  SysTick_Config(CGU_GetPCLKFrequency(CGU_PERIPHERAL_M4CORE) / TUSB_CFG_TICKS_HZ);

  /* Configure LED0 as GPIO */
  scu_pinmux(BOARD_LED0_PORT, BOARD_LED0_PIN, MD_PDN, BOARD_LED0_FUNCTION);
  GPIO_SetDir(BOARD_LED0_GPIO_PORT, (1 << BOARD_LED0_GPIO_PIN), 1);

  /* Configure TRACE pins */
  scu_pinmux(0xF, 4, MD_PDN, 0x2); /* PF_4 = TRACECLK */
  scu_pinmux(0x7, 4, MD_PDN, 0x5); /* P7_4 = TRACEDATA[0] */
  scu_pinmux(0x7, 5, MD_PDN, 0x5); /* P7_5 = TRACEDATA[1] */
  scu_pinmux(0x7, 6, MD_PDN, 0x5); /* P7_6 = TRACEDATA[2] */
  scu_pinmux(0x7, 7, MD_PDN, 0x5); /* P7_7 = TRACEDATA[3] */

  // USB0 Power: EA4357 channel B U20 GPIO26 active low (base board), P2_3 on LPC4357
  scu_pinmux(0x2, 3, MD_PUP | MD_EZI, FUNC7);       // USB0 VBus Power

  // 1.5Kohm pull-up resistor is needed on the USB DP data signal. GPIO28 (base), P9_5 (LPC4357) controls
  //scu_pinmux(0x9, 5, MD_PUP|MD_EZI|MD_ZI, FUNC4);     // GPIO5[18]
  //GPIO_SetDir(5, BIT_(18), 1); // output
  //GPIO_ClearValue(5, BIT_(18));

  /* Init I2C @ 400kHz */
  I2C_Init(LPC_I2C0, 400000);
  I2C_Cmd(LPC_I2C0, ENABLE);

#if CFG_UART_ENABLE
  //------------- UART init -------------//
  scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_TX, MD_PDN             , FUNC1);
  scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_RX, MD_PLN|MD_EZI|MD_ZI, FUNC1);

  UART_CFG_Type UARTConfigStruct;
  UART_ConfigStructInit(&UARTConfigStruct);
  UARTConfigStruct.Baud_rate = CFG_UART_BAUDRATE;
  UARTConfigStruct.Clock_Speed = 0;

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

//--------------------------------------------------------------------+
// LEDS
//--------------------------------------------------------------------+
void board_leds(uint32_t on_mask, uint32_t off_mask)
{
  if (on_mask & 0x01)
  {
    LPC_GPIO_PORT->SET[BOARD_LED0_GPIO_PORT] = (1 << BOARD_LED0_GPIO_PIN);
  }

  if (off_mask & 0x01)
  {
    LPC_GPIO_PORT->CLR[BOARD_LED0_GPIO_PORT] = (1 << BOARD_LED0_GPIO_PIN);
  }
}

//--------------------------------------------------------------------+
// UART
//--------------------------------------------------------------------+
#if CFG_UART_ENABLE
uint32_t board_uart_send(uint8_t *buffer, uint32_t length)
{
  return UART_Send(BOARD_UART_PORT, buffer, length, BLOCKING);
}

uint32_t board_uart_recv(uint8_t *buffer, uint32_t length)
{
  return UART_Receive(BOARD_UART_PORT, buffer, length, BLOCKING);
}
#endif

#endif