304 lines
9.3 KiB
C
304 lines
9.3 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "chip.h"
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#include "../board.h"
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#include "pca9532.h"
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#define UART_DEV LPC_USART0
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#define UART_PORT 0x0f
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#define UART_PIN_TX 10
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#define UART_PIN_RX 11
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// P9_1 joystick down
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#define BUTTON_PORT 4
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#define BUTTON_PIN 13
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//static const struct {
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// uint8_t mux_port;
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// uint8_t mux_pin;
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//
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// uint8_t gpio_port;
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// uint8_t gpio_pin;
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//}buttons[] =
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//{
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// {0x0a, 3, 4, 10 }, // Joystick up
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// {0x09, 1, 4, 13 }, // Joystick down
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// {0x0a, 2, 4, 9 }, // Joystick left
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// {0x09, 0, 4, 12 }, // Joystick right
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// {0x0a, 1, 4, 8 }, // Joystick press
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// {0x02, 7, 0, 7 }, // SW6
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//};
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#ifdef BOARD_TUD_RHPORT
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#define PORT_SUPPORT_DEVICE(_n) (BOARD_TUD_RHPORT == _n)
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#else
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#define PORT_SUPPORT_DEVICE(_n) 0
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#endif
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#ifdef BOARD_TUH_RHPORT
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#define PORT_SUPPORT_HOST(_n) (BOARD_TUH_RHPORT == _n)
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#else
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#define PORT_SUPPORT_HOST(_n) 0
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#endif
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/*------------------------------------------------------------------*/
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/* BOARD API
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*------------------------------------------------------------------*/
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/* System configuration variables used by chip driver */
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const uint32_t OscRateIn = 12000000;
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const uint32_t ExtRateIn = 0;
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static const PINMUX_GRP_T pinmuxing[] =
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{
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// Button ( Joystick down )
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{0x9, 1, (SCU_MODE_INBUFF_EN | SCU_MODE_INACT | SCU_MODE_FUNC0 | SCU_MODE_PULLUP)},
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// UART
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{UART_PORT, UART_PIN_TX, SCU_MODE_PULLDOWN | SCU_MODE_FUNC1},
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{UART_PORT, UART_PIN_RX, SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC1},
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// USB
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};
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/* Pin clock mux values, re-used structure, value in first index is meaningless */
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static const PINMUX_GRP_T pinclockmuxing[] =
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{
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{0, 0, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
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{0, 1, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
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{0, 2, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
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{0, 3, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_HIGHSPEEDSLEW_EN | SCU_MODE_FUNC0)},
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};
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// Invoked by startup code
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void SystemInit(void)
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{
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#ifdef __USE_LPCOPEN
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extern void (* const g_pfnVectors[])(void);
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unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08;
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*pSCB_VTOR = (unsigned int) g_pfnVectors;
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#if __FPU_USED == 1
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fpuInit();
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#endif
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#endif // __USE_LPCOPEN
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/* Setup system level pin muxing */
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Chip_SCU_SetPinMuxing(pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
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/* Clock pins only, group field not used */
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for (int i = 0; i <(int) (sizeof(pinclockmuxing) / sizeof(pinclockmuxing[0])); i++)
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{
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Chip_SCU_ClockPinMuxSet(pinclockmuxing[i].pinnum, pinclockmuxing[i].modefunc);
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}
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Chip_SetupXtalClocking();
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}
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void board_init(void)
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{
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SystemCoreClockUpdate();
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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Chip_GPIO_Init(LPC_GPIO_PORT);
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// LED via pca9532 I2C
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Chip_SCU_I2C0PinConfig(I2C0_STANDARD_FAST_MODE);
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Chip_I2C_Init(I2C0);
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Chip_I2C_SetClockRate(I2C0, 100000);
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Chip_I2C_SetMasterEventHandler(I2C0, Chip_I2C_EventHandlerPolling);
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pca9532_init();
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// Button
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Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN);
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//------------- UART -------------//
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Chip_UART_Init(UART_DEV);
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Chip_UART_SetBaud(UART_DEV, CFG_BOARD_UART_BAUDRATE);
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Chip_UART_ConfigData(UART_DEV, UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS);
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Chip_UART_TXEnable(UART_DEV);
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//------------- USB -------------//
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enum {
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USBMODE_DEVICE = 2,
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USBMODE_HOST = 3
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};
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enum {
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USBMODE_VBUS_LOW = 0,
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USBMODE_VBUS_HIGH = 1
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};
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/* From EA4357 user manual
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*
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* USB0 Device operation:
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* - Insert jumpers in position 1-2 in JP17/JP18/JP19.
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* - GPIO28 controls USB connect functionality
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* - LED32 lights when the USB Device is connected. SJ4 has pads 1-2 shorted by default.
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* - LED33 is controlled by GPIO27 and signals USB-up state. GPIO54 is used for VBUS
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* sensing.
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*
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* USB0 Host operation:
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* - insert jumpers in position 2-3 in JP17/JP18/JP19.
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* - USB Host power is controlled via distribution switch U20 (found in schematic page 11).
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* - Signal GPIO26 is active low and enables +5V on VBUS2.
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* - LED35 light whenever +5V is present on VBUS2.
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* - GPIO55 is connected to status feedback from the distribution switch.
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* - GPIO54 is used for VBUS sensing. 15Kohm pull-down resistors are always active
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*
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* Note:
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* - Insert jumpers in position 2-3 in JP17/JP18/JP19
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* - Insert jumpers in JP31 (OTG)
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*/
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#if PORT_SUPPORT_DEVICE(0) || PORT_SUPPORT_HOST(0)
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Chip_USB0_Init();
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#endif
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/* From EA4357 user manual
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*
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* For USB1 Device:
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* - a 1.5Kohm pull-up resistor is needed on the USB DP data signal. There are two methods to create this.
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* JP15 is inserted and the pull-up resistor is always enabled. Alternatively, the pull-up resistor is activated
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* inside the USB OTG chip (U31), and this has to be done via the I2C interface of GPIO52/GPIO53. In the latter case,
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* JP15 shall not be inserted.
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* - J19 is the connector to use when USB Device is used. Normally it should be a USB-B connector for
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* creating a USB Device interface, but the mini-AB connector can also be used in this case. The status
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* of VBUS can be read via U31.
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* - JP16 shall not be inserted.
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*
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* For USB1 Host:
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* - 15Kohm pull-down resistors are needed on the USB data signals. These are activated inside the USB OTG chip (U31),
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* and this has to be done via the I2C interface of GPIO52/GPIO53.
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* - J20 is the connector to use when USB Host is used. In order to provide +5V to the external USB
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* device connected to this connector (J20), channel A of U20 must be enabled. It is enabled by default
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* since SJ5 is normally connected between pin 1-2.
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* - LED34 lights green when +5V is available on J20.
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* - JP15 shall not be inserted. JP16 has no effect
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*/
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#if PORT_SUPPORT_DEVICE(1) || PORT_SUPPORT_HOST(1)
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Chip_USB1_Init();
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#endif
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// USB0 Vbus Power: P2_3 on EA4357 channel B U20 GPIO26 active low (base board)
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Chip_SCU_PinMuxSet(2, 3, SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC7);
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#if PORT_SUPPORT_DEVICE(0)
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// P9_5 (GPIO5[18]) (GPIO28 on oem base) as USB connect, active low.
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Chip_SCU_PinMuxSet(9, 5, SCU_MODE_PULLDOWN | SCU_MODE_FUNC4);
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Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 18);
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#endif
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// USB1 Power: EA4357 channel A U20 is enabled by SJ5 connected to pad 1-2, no more action required
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// TODO Remove R170, R171, solder a pair of 15K to USB1 D+/D- to test with USB1 Host
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}
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//--------------------------------------------------------------------+
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// USB Interrupt Handler
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//--------------------------------------------------------------------+
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void USB0_IRQHandler(void)
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{
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#if PORT_SUPPORT_DEVICE(0)
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tud_int_handler(0);
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#endif
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#if PORT_SUPPORT_HOST(0)
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tuh_int_handler(0);
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#endif
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}
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void USB1_IRQHandler(void)
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{
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#if PORT_SUPPORT_DEVICE(1)
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tud_int_handler(1);
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#endif
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#if PORT_SUPPORT_HOST(1)
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tuh_int_handler(1);
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#endif
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state)
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{
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if (state)
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{
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pca9532_setLeds( LED1, 0 );
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}else
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{
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pca9532_setLeds( 0, LED1);
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}
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}
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uint32_t board_button_read(void)
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{
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// active low
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return Chip_GPIO_GetPinState(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN) ? 0 : 1;
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}
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int board_uart_read(uint8_t* buf, int len)
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{
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//return UART_ReceiveByte(BOARD_UART_DEV);
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(void) buf; (void) len;
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return 0;
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}
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int board_uart_write(void const * buf, int len)
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{
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uint8_t const* buf8 = (uint8_t const*) buf;
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for(int i=0; i<len; i++)
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{
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while ((Chip_UART_ReadLineStatus(UART_DEV) & UART_LSR_THRE) == 0) {}
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Chip_UART_SendByte(UART_DEV, buf8[i]);
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}
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return len;
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler (void)
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{
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system_ticks++;
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}
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uint32_t board_millis(void)
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{
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return system_ticks;
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}
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#endif
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