305 lines
9.9 KiB
C
305 lines
9.9 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 BOARD_UART_PORT LPC_USART0
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#define BOARD_UART_PIN_PORT 0x0f
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#define BOARD_UART_PIN_TX 10 // PF.10 : UART0_TXD
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#define BOARD_UART_PIN_RX 11 // PF.11 : UART0_RXD
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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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/*------------------------------------------------------------------*/
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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
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{0x9, 1, (SCU_MODE_INBUFF_EN | SCU_MODE_INACT | SCU_MODE_FUNC0 | SCU_MODE_PULLUP)},
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// USB
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/* I2S */
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{0x3, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC2)}, //I2S0_TX_CLK
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{0xC, 12, (SCU_PINIO_FAST | SCU_MODE_FUNC6)}, //I2S0_TX_SDA
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{0xC, 13, (SCU_PINIO_FAST | SCU_MODE_FUNC6)}, //I2S0_TX_WS
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{0x6, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC4)}, //I2S0_RX_SCK
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{0x6, 1, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, //I2S0_RX_WS
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{0x6, 2, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, //I2S0_RX_SDA
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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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/* 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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#if 0
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//------------- UART -------------//
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scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_TX, MD_PDN, FUNC1);
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scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_RX, MD_PLN | MD_EZI | MD_ZI, FUNC1);
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UART_CFG_Type UARTConfigStruct;
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UART_ConfigStructInit(&UARTConfigStruct);
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UARTConfigStruct.Baud_rate = CFG_BOARD_UART_BAUDRATE;
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UARTConfigStruct.Clock_Speed = 0;
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UART_Init(BOARD_UART_PORT, &UARTConfigStruct);
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UART_TxCmd(BOARD_UART_PORT, ENABLE); // Enable UART Transmit
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#endif
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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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/* USB0
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* For USB Device operation; insert jumpers in position 1-2 in JP17/JP18/JP19. GPIO28 controls USB
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* connect functionality and LED32 lights when the USB Device is connected. SJ4 has pads 1-2 shorted
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* by default. LED33 is controlled by GPIO27 and signals USB-up state. GPIO54 is used for VBUS
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* sensing.
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* For USB Host operation; insert jumpers in position 2-3 in JP17/JP18/JP19. USB Host power is
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* controlled via distribution switch U20 (found in schematic page 11). Signal GPIO26 is active low and
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* enables +5V on VBUS2. LED35 light whenever +5V is present on VBUS2. GPIO55 is connected to
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* status feedback from the distribution switch. GPIO54 is used for VBUS sensing. 15Kohm pull-down
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* resistors are always active
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*/
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#if CFG_TUSB_RHPORT0_MODE
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Chip_USB0_Init();
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// // Reset controller
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// LPC_USB0->USBCMD_D |= 0x02;
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// while( LPC_USB0->USBCMD_D & 0x02 ) {}
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//
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// // Set mode
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// #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
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// LPC_USB0->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
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//
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// LPC_USB0->PORTSC1_D |= (1<<24); // FIXME force full speed for debugging
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// #else // TODO OTG
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// LPC_USB0->USBMODE_D = USBMODE_DEVICE;
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// LPC_USB0->OTGSC = (1<<3) | (1<<0) /*| (1<<16)| (1<<24)| (1<<25)| (1<<26)| (1<<27)| (1<<28)| (1<<29)| (1<<30)*/;
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// #endif
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#endif
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/* USB1
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* When USB channel #1 is used as USB Host, 15Kohm pull-down resistors are needed on the USB data
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* signals. These are activated inside the USB OTG chip (U31), and this has to be done via the I2C
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* 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. 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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* When USB channel #1 is used as USB Device, a 1.5Kohm pull-up resistor is needed on the USB DP
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* data signal. There are two methods to create this. JP15 is inserted and the pull-up resistor is always
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* enabled. Alternatively, the pull-up resistor is activated inside the USB OTG chip (U31), and this has to
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* be done via the I2C interface of GPIO52/GPIO53. In the latter case, 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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#if CFG_TUSB_RHPORT1_MODE
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Chip_USB1_Init();
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// // Reset controller
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// LPC_USB1->USBCMD_D |= 0x02;
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// while( LPC_USB1->USBCMD_D & 0x02 ) {}
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//
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// // Set mode
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// #if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
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// LPC_USB1->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
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// #else // TODO OTG
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// LPC_USB1->USBMODE_D = USBMODE_DEVICE;
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// #endif
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//
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// // USB1 as fullspeed
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// LPC_USB1->PORTSC1_D |= (1<<24);
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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 CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
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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 CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
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tuh_isr(0);
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#endif
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#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
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tud_isr(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 CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
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tuh_isr(1);
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#endif
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#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
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tud_isr(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_PORT);
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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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//UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
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(void) buf; (void) len;
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return 0;
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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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