/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
#include "chip.h"
#include "../board.h"
#include "pca9532.h"
#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
// P9_1 joystick down
#define BUTTON_PORT 4
#define BUTTON_PIN 13
//static const struct {
// uint8_t mux_port;
// uint8_t mux_pin;
//
// uint8_t gpio_port;
// uint8_t gpio_pin;
//}buttons[] =
//{
// {0x0a, 3, 4, 10 }, // Joystick up
// {0x09, 1, 4, 13 }, // Joystick down
// {0x0a, 2, 4, 9 }, // Joystick left
// {0x09, 0, 4, 12 }, // Joystick right
// {0x0a, 1, 4, 8 }, // Joystick press
// {0x02, 7, 0, 7 }, // SW6
//};
/*------------------------------------------------------------------*/
/* BOARD API
*------------------------------------------------------------------*/
/* System configuration variables used by chip driver */
const uint32_t OscRateIn = 12000000;
const uint32_t ExtRateIn = 0;
static const PINMUX_GRP_T pinmuxing[] =
{
// Button
{0x9, 1, (SCU_MODE_INBUFF_EN | SCU_MODE_INACT | SCU_MODE_FUNC0 | SCU_MODE_PULLUP)},
// USB
/* I2S */
{0x3, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC2)}, //I2S0_TX_CLK
{0xC, 12, (SCU_PINIO_FAST | SCU_MODE_FUNC6)}, //I2S0_TX_SDA
{0xC, 13, (SCU_PINIO_FAST | SCU_MODE_FUNC6)}, //I2S0_TX_WS
{0x6, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC4)}, //I2S0_RX_SCK
{0x6, 1, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, //I2S0_RX_WS
{0x6, 2, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, //I2S0_RX_SDA
};
/* Pin clock mux values, re-used structure, value in first index is meaningless */
static const PINMUX_GRP_T pinclockmuxing[] =
{
{0, 0, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
{0, 1, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
{0, 2, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
{0, 3, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
};
// Invoked by startup code
void SystemInit(void)
{
/* Setup system level pin muxing */
Chip_SCU_SetPinMuxing(pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
/* Clock pins only, group field not used */
for (int i = 0; i <(int) (sizeof(pinclockmuxing) / sizeof(pinclockmuxing[0])); i++)
{
Chip_SCU_ClockPinMuxSet(pinclockmuxing[i].pinnum, pinclockmuxing[i].modefunc);
}
Chip_SetupXtalClocking();
}
void board_init(void)
{
SystemCoreClockUpdate();
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
//NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
#endif
Chip_GPIO_Init(LPC_GPIO_PORT);
// LED via pca9532 I2C
Chip_SCU_I2C0PinConfig(I2C0_STANDARD_FAST_MODE);
Chip_I2C_Init(I2C0);
Chip_I2C_SetClockRate(I2C0, 100000);
Chip_I2C_SetMasterEventHandler(I2C0, Chip_I2C_EventHandlerPolling);
pca9532_init();
// Button
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN);
#if 0
//------------- UART -------------//
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
//------------- USB -------------//
enum {
USBMODE_DEVICE = 2,
USBMODE_HOST = 3
};
enum {
USBMODE_VBUS_LOW = 0,
USBMODE_VBUS_HIGH = 1
};
/* USB0
* For USB Device operation; insert jumpers in position 1-2 in JP17/JP18/JP19. GPIO28 controls USB
* connect functionality and LED32 lights when the USB Device is connected. SJ4 has pads 1-2 shorted
* by default. LED33 is controlled by GPIO27 and signals USB-up state. GPIO54 is used for VBUS
* sensing.
* For USB Host operation; insert jumpers in position 2-3 in JP17/JP18/JP19. USB Host power is
* controlled via distribution switch U20 (found in schematic page 11). Signal GPIO26 is active low and
* enables +5V on VBUS2. LED35 light whenever +5V is present on VBUS2. GPIO55 is connected to
* status feedback from the distribution switch. GPIO54 is used for VBUS sensing. 15Kohm pull-down
* resistors are always active
*/
#if CFG_TUSB_RHPORT0_MODE
Chip_USB0_Init();
// Reset controller
LPC_USB0->USBCMD_D |= 0x02;
while( LPC_USB0->USBCMD_D & 0x02 ) {}
// Set mode
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
LPC_USB0->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
LPC_USB0->PORTSC1_D |= (1<<24); // FIXME force full speed for debugging
#else // TODO OTG
LPC_USB0->USBMODE_D = USBMODE_DEVICE;
LPC_USB0->OTGSC = (1<<3) | (1<<0) /*| (1<<16)| (1<<24)| (1<<25)| (1<<26)| (1<<27)| (1<<28)| (1<<29)| (1<<30)*/;
#endif
#endif
/* USB1
* When USB channel #1 is used as USB Host, 15Kohm pull-down resistors are needed on the USB data
* signals. These are activated inside the USB OTG chip (U31), and this has to be done via the I2C
* interface of GPIO52/GPIO53.
* J20 is the connector to use when USB Host is used. In order to provide +5V to the external USB
* device connected to this connector (J20), channel A of U20 must be enabled. It is enabled by default
* since SJ5 is normally connected between pin 1-2. LED34 lights green when +5V is available on J20.
* JP15 shall not be inserted. JP16 has no effect
*
* When USB channel #1 is used as USB Device, a 1.5Kohm pull-up resistor is needed on the USB DP
* data signal. There are two methods to create this. JP15 is inserted and the pull-up resistor is always
* enabled. Alternatively, the pull-up resistor is activated inside the USB OTG chip (U31), and this has to
* be done via the I2C interface of GPIO52/GPIO53. In the latter case, JP15 shall not be inserted.
* J19 is the connector to use when USB Device is used. Normally it should be a USB-B connector for
* creating a USB Device interface, but the mini-AB connector can also be used in this case. The status
* of VBUS can be read via U31.
* JP16 shall not be inserted.
*/
#if CFG_TUSB_RHPORT1_MODE
Chip_USB1_Init();
// Reset controller
LPC_USB1->USBCMD_D |= 0x02;
while( LPC_USB1->USBCMD_D & 0x02 ) {}
// Set mode
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
LPC_USB1->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
#else // TODO OTG
LPC_USB1->USBMODE_D = USBMODE_DEVICE;
#endif
// USB1 as fullspeed
LPC_USB1->PORTSC1_D |= (1<<24);
#endif
// USB0 Vbus Power: P2_3 on EA4357 channel B U20 GPIO26 active low (base board)
Chip_SCU_PinMuxSet(2, 3, SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC7);
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
// P9_5 (GPIO5[18]) (GPIO28 on oem base) as USB connect, active low.
Chip_SCU_PinMuxSet(9, 5, SCU_MODE_PULLDOWN | SCU_MODE_FUNC4);
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 18);
#endif
// USB1 Power: EA4357 channel A U20 is enabled by SJ5 connected to pad 1-2, no more action required
// TODO Remove R170, R171, solder a pair of 15K to USB1 D+/D- to test with USB1 Host
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state)
{
if (state)
{
pca9532_setLeds( LED1, 0 );
}else
{
pca9532_setLeds( 0, LED1);
}
}
uint32_t board_button_read(void)
{
// active low
return Chip_GPIO_GetPinState(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN) ? 0 : 1;
}
int board_uart_read(uint8_t* buf, int len)
{
//return UART_ReceiveByte(BOARD_UART_PORT);
(void) buf;
(void) len;
return 0;
}
int board_uart_write(void const * buf, int len)
{
//UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
(void) buf;
(void) len;
return 0;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler (void)
{
system_ticks++;
}
uint32_t board_millis(void)
{
return system_ticks;
}
#endif