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/*
* The MIT License (MIT)
*
* Copyright (c) 2024 Brent Kowal (Analog Devices, Inc)
*
* 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.
*/
/* metadata:
manufacturer: Analog Devices
*/
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wstrict-prototypes" // _mxc_crit_get_state()
#pragma GCC diagnostic ignored "-Wredundant-decls"
#endif
#include "gpio.h"
#include "mxc_sys.h"
#if __has_include("mcr_regs.h")
#include "mcr_regs.h"
#endif
#include "mxc_device.h"
#include "uart.h"
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#include "board.h"
#include "bsp/board_api.h"
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB_IRQHandler(void) {
tud_int_handler(0);
}
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM
//--------------------------------------------------------------------+
mxc_uart_regs_t *ConsoleUart = MXC_UART_GET_UART(UART_NUM);
void board_init(void) {
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// Explicitly disable systick to prevent its ISR from running before scheduler start
SysTick->CTRL &= ~1U;
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
#endif
mxc_gpio_cfg_t gpioConfig;
// LED
gpioConfig.drvstr = MXC_GPIO_DRVSTR_0;
gpioConfig.func = MXC_GPIO_FUNC_OUT;
gpioConfig.mask = LED_PIN;
gpioConfig.pad = MXC_GPIO_PAD_NONE;
gpioConfig.port = LED_PORT;
gpioConfig.vssel = LED_VDDIO;
MXC_GPIO_Config(&gpioConfig);
board_led_write(false);
// Button
gpioConfig.drvstr = MXC_GPIO_DRVSTR_0;
gpioConfig.func = MXC_GPIO_FUNC_IN;
gpioConfig.mask = BUTTON_PIN;
gpioConfig.pad = BUTTON_PULL;
gpioConfig.port = BUTTON_PORT;
gpioConfig.vssel = MXC_GPIO_VSSEL_VDDIO;
MXC_GPIO_Config(&gpioConfig);
// UART
#if MAX_PERIPH_ID == 14
MXC_UART_Init(ConsoleUart, CFG_BOARD_UART_BAUDRATE, UART_MAP);
#elif MAX_PERIPH_ID == 18 || MAX_PERIPH_ID == 87
MXC_UART_Init(ConsoleUart, CFG_BOARD_UART_BAUDRATE, MXC_UART_IBRO_CLK);
#if MAX_PERIPH_ID == 87
UART_PORT->vssel |= UART_VDDIO_BITS; // Set necessary bits to 3.3V
#endif
#endif
//USB
#if defined(MAX32650)
// Startup the HIRC96M clock if it's not on already
if (!(MXC_GCR->clk_ctrl & MXC_F_GCR_CLK_CTRL_HIRC96_EN)) {
MXC_GCR->clk_ctrl |= MXC_F_GCR_CLK_CTRL_HIRC96_EN;
MXC_SYS_Clock_Timeout(MXC_F_GCR_CLK_CTRL_HIRC96_RDY);
}
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_USB);
MXC_SYS_Reset_Periph(MXC_SYS_RESET_USB);
#elif defined(MAX32665) || defined(MAX32666)
// Startup the HIRC96M clock if it's not on already
if (!(MXC_GCR->clkcn & MXC_F_GCR_CLKCN_HIRC96M_EN)) {
MXC_GCR->clkcn |= MXC_F_GCR_CLKCN_HIRC96M_EN;
}
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_USB);
MXC_SYS_Reset_Periph(MXC_SYS_RESET_USB);
#elif defined(MAX32690)
MXC_SYS_ClockSourceEnable(MXC_SYS_CLOCK_IPO);
MXC_MCR->ldoctrl |= MXC_F_MCR_LDOCTRL_0P9EN;
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_USB);
MXC_SYS_Reset_Periph(MXC_SYS_RESET0_USB);
# elif defined(MAX78002)
MXC_MCR->ldoctrl |= MXC_F_MCR_LDOCTRL_0P9EN;
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_USB);
#else
#error "Unsupported MAXIM MCU for board_dfu_init"
#endif
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state) {
#if LED_STATE_ON
state = !state;
#endif
if (state) {
MXC_GPIO_OutClr(LED_PORT, LED_PIN);
} else {
MXC_GPIO_OutSet(LED_PORT, LED_PIN);
}
}
uint32_t board_button_read(void) {
uint32_t state = MXC_GPIO_InGet(BUTTON_PORT, BUTTON_PIN) ? 1 : 0;
return BUTTON_STATE_ACTIVE == state;
}
size_t board_get_unique_id(uint8_t id[], size_t max_len) {
#if defined(MAX32650)
// USN is 13 bytes on this device
(void) max_len;
MXC_SYS_GetUSN(id, 13);
return 13;
#else
uint8_t hw_id[MXC_SYS_USN_CHECKSUM_LEN]; //USN Buffer
MXC_SYS_GetUSN(hw_id, NULL); // 2nd parameter is optional checksum buffer
size_t act_len = TU_MIN(max_len, MXC_SYS_USN_LEN);
memcpy(id, hw_id, act_len);
return act_len;
#endif
}
int board_uart_read(uint8_t *buf, int len) {
int uart_val;
int act_len = 0;
while (act_len < len) {
if ((uart_val = MXC_UART_ReadCharacterRaw(ConsoleUart)) == E_UNDERFLOW) {
break;
} else {
*buf++ = (uint8_t) uart_val;
act_len++;
}
}
return act_len;
}
int board_uart_write(void const *buf, int len) {
const uint8_t *p = (const uint8_t *) buf;
int count = 0;
while (count < len) {
if (MXC_UART_GetTXFIFOAvailable(ConsoleUart) > 0) {
MXC_UART_WriteCharacterRaw(ConsoleUart, p[count]);
count++;
} else {
break;
}
}
return count;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void) {
system_ticks++;
}
uint32_t tusb_time_millis_api(void) {
return system_ticks;
}
#endif
void HardFault_Handler(void) {
__asm("BKPT #0\n");
}
// Required by __libc_init_array in startup code if we are compiling using
// -nostdlib/-nostartfiles.
void _init(void) {
}
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