diff options
Diffstat (limited to 'tinyusb/hw/bsp/d5035_01/d5035_01.c')
| -rwxr-xr-x | tinyusb/hw/bsp/d5035_01/d5035_01.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/d5035_01/d5035_01.c b/tinyusb/hw/bsp/d5035_01/d5035_01.c new file mode 100755 index 00000000..5685ff16 --- /dev/null +++ b/tinyusb/hw/bsp/d5035_01/d5035_01.c @@ -0,0 +1,353 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2020 Jean Gressmann <jean@0x42.de> + * + * 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. + * + */ + +#include <sam.h> +#include "bsp/board.h" + +#include <hal/include/hal_gpio.h> + +#if CONF_CPU_FREQUENCY != 80000000 +# error "CONF_CPU_FREQUENCY" must 80000000 +#endif + +#if CONF_GCLK_USB_FREQUENCY != 48000000 +# error "CONF_GCLK_USB_FREQUENCY" must 48000000 +#endif + +#if !defined(HWREV) +# error Define "HWREV" +#endif + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void USB_0_Handler (void) +{ + tud_int_handler(0); +} + +void USB_1_Handler (void) +{ + tud_int_handler(0); +} + +void USB_2_Handler (void) +{ + tud_int_handler(0); +} + +void USB_3_Handler (void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM DECLARATION +//--------------------------------------------------------------------+ +#define LED_PIN PIN_PA02 + +#if HWREV < 3 +# define BOARD_SERCOM SERCOM5 +#else +# define BOARD_SERCOM SERCOM0 +#endif + +static inline void init_clock(void) +{ + /* AUTOWS is enabled by default in REG_NVMCTRL_CTRLA - no need to change the number of wait states when changing the core clock */ +#if HWREV == 1 + /* configure XOSC1 for a 16MHz crystal connected to XIN1/XOUT1 */ + OSCCTRL->XOSCCTRL[1].reg = + OSCCTRL_XOSCCTRL_STARTUP(6) | // 1,953 ms + OSCCTRL_XOSCCTRL_RUNSTDBY | + OSCCTRL_XOSCCTRL_ENALC | + OSCCTRL_XOSCCTRL_IMULT(4) | + OSCCTRL_XOSCCTRL_IPTAT(3) | + OSCCTRL_XOSCCTRL_XTALEN | + OSCCTRL_XOSCCTRL_ENABLE; + while(0 == OSCCTRL->STATUS.bit.XOSCRDY1); + + OSCCTRL->Dpll[0].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_DIV(3) | OSCCTRL_DPLLCTRLB_REFCLK(OSCCTRL_DPLLCTRLB_REFCLK_XOSC1_Val); /* pre-scaler = 8, input = XOSC1 */ + OSCCTRL->Dpll[0].DPLLRATIO.reg = OSCCTRL_DPLLRATIO_LDRFRAC(0x0) | OSCCTRL_DPLLRATIO_LDR(39); /* multiply by 40 -> 80 MHz */ + OSCCTRL->Dpll[0].DPLLCTRLA.reg = OSCCTRL_DPLLCTRLA_RUNSTDBY | OSCCTRL_DPLLCTRLA_ENABLE; + while(0 == OSCCTRL->Dpll[0].DPLLSTATUS.bit.CLKRDY); /* wait for the PLL0 to be ready */ + + OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_DIV(7) | OSCCTRL_DPLLCTRLB_REFCLK(OSCCTRL_DPLLCTRLB_REFCLK_XOSC1_Val); /* pre-scaler = 16, input = XOSC1 */ + OSCCTRL->Dpll[1].DPLLRATIO.reg = OSCCTRL_DPLLRATIO_LDRFRAC(0x0) | OSCCTRL_DPLLRATIO_LDR(47); /* multiply by 48 -> 48 MHz */ + OSCCTRL->Dpll[1].DPLLCTRLA.reg = OSCCTRL_DPLLCTRLA_RUNSTDBY | OSCCTRL_DPLLCTRLA_ENABLE; + while(0 == OSCCTRL->Dpll[1].DPLLSTATUS.bit.CLKRDY); /* wait for the PLL1 to be ready */ +#else // HWREV >= 1 + /* configure XOSC0 for a 16MHz crystal connected to XIN0/XOUT0 */ + OSCCTRL->XOSCCTRL[0].reg = + OSCCTRL_XOSCCTRL_STARTUP(6) | // 1,953 ms + OSCCTRL_XOSCCTRL_RUNSTDBY | + OSCCTRL_XOSCCTRL_ENALC | + OSCCTRL_XOSCCTRL_IMULT(4) | + OSCCTRL_XOSCCTRL_IPTAT(3) | + OSCCTRL_XOSCCTRL_XTALEN | + OSCCTRL_XOSCCTRL_ENABLE; + while(0 == OSCCTRL->STATUS.bit.XOSCRDY0); + + OSCCTRL->Dpll[0].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_DIV(3) | OSCCTRL_DPLLCTRLB_REFCLK(OSCCTRL_DPLLCTRLB_REFCLK_XOSC0_Val); /* pre-scaler = 8, input = XOSC1 */ + OSCCTRL->Dpll[0].DPLLRATIO.reg = OSCCTRL_DPLLRATIO_LDRFRAC(0x0) | OSCCTRL_DPLLRATIO_LDR(39); /* multiply by 40 -> 80 MHz */ + OSCCTRL->Dpll[0].DPLLCTRLA.reg = OSCCTRL_DPLLCTRLA_RUNSTDBY | OSCCTRL_DPLLCTRLA_ENABLE; + while(0 == OSCCTRL->Dpll[0].DPLLSTATUS.bit.CLKRDY); /* wait for the PLL0 to be ready */ + + OSCCTRL->Dpll[1].DPLLCTRLB.reg = OSCCTRL_DPLLCTRLB_DIV(7) | OSCCTRL_DPLLCTRLB_REFCLK(OSCCTRL_DPLLCTRLB_REFCLK_XOSC0_Val); /* pre-scaler = 16, input = XOSC1 */ + OSCCTRL->Dpll[1].DPLLRATIO.reg = OSCCTRL_DPLLRATIO_LDRFRAC(0x0) | OSCCTRL_DPLLRATIO_LDR(47); /* multiply by 48 -> 48 MHz */ + OSCCTRL->Dpll[1].DPLLCTRLA.reg = OSCCTRL_DPLLCTRLA_RUNSTDBY | OSCCTRL_DPLLCTRLA_ENABLE; + while(0 == OSCCTRL->Dpll[1].DPLLSTATUS.bit.CLKRDY); /* wait for the PLL1 to be ready */ +#endif // HWREV + + /* configure clock-generator 0 to use DPLL0 as source -> GCLK0 is used for the core */ + GCLK->GENCTRL[0].reg = + GCLK_GENCTRL_DIV(0) | + GCLK_GENCTRL_RUNSTDBY | + GCLK_GENCTRL_GENEN | + GCLK_GENCTRL_SRC_DPLL0 | /* DPLL0 */ + GCLK_GENCTRL_IDC ; + while(1 == GCLK->SYNCBUSY.bit.GENCTRL0); /* wait for the synchronization between clock domains to be complete */ + + /* configure clock-generator 1 to use DPLL1 as source -> for use with some peripheral */ + GCLK->GENCTRL[1].reg = + GCLK_GENCTRL_DIV(0) | + GCLK_GENCTRL_RUNSTDBY | + GCLK_GENCTRL_GENEN | + GCLK_GENCTRL_SRC_DPLL1 | + GCLK_GENCTRL_IDC ; + while(1 == GCLK->SYNCBUSY.bit.GENCTRL1); /* wait for the synchronization between clock domains to be complete */ + + /* configure clock-generator 2 to use DPLL0 as source -> for use with SERCOM */ + GCLK->GENCTRL[2].reg = + GCLK_GENCTRL_DIV(1) | /* 80MHz */ + GCLK_GENCTRL_RUNSTDBY | + GCLK_GENCTRL_GENEN | + GCLK_GENCTRL_SRC_DPLL0 | + GCLK_GENCTRL_IDC ; + while(1 == GCLK->SYNCBUSY.bit.GENCTRL2); /* wait for the synchronization between clock domains to be complete */ +} + +static inline void uart_init(void) +{ +#if HWREV < 3 + /* configure SERCOM5 on PB02 */ + PORT->Group[1].WRCONFIG.reg = + PORT_WRCONFIG_WRPINCFG | + PORT_WRCONFIG_WRPMUX | + PORT_WRCONFIG_PMUX(3) | /* function D */ + PORT_WRCONFIG_DRVSTR | + PORT_WRCONFIG_PINMASK(0x0004) | /* PB02 */ + PORT_WRCONFIG_PMUXEN; + + MCLK->APBDMASK.bit.SERCOM5_ = 1; + GCLK->PCHCTRL[SERCOM5_GCLK_ID_CORE].reg = GCLK_PCHCTRL_GEN_GCLK2 | GCLK_PCHCTRL_CHEN; /* setup SERCOM to use GLCK2 -> 80MHz */ + + SERCOM5->USART.CTRLA.reg = 0x00; /* disable SERCOM -> enable config */ + while(SERCOM5->USART.SYNCBUSY.bit.ENABLE); + + SERCOM5->USART.CTRLA.reg = /* CMODE = 0 -> async, SAMPA = 0, FORM = 0 -> USART frame, SMPR = 0 -> arithmetic baud rate */ + SERCOM_USART_CTRLA_SAMPR(1) | /* 0 = 16x / arithmetic baud rate, 1 = 16x / fractional baud rate */ +// SERCOM_USART_CTRLA_FORM(0) | /* 0 = USART Frame, 2 = LIN Master */ + SERCOM_USART_CTRLA_DORD | /* LSB first */ + SERCOM_USART_CTRLA_MODE(1) | /* 0 = Asynchronous, 1 = USART with internal clock */ + SERCOM_USART_CTRLA_RXPO(1) | /* SERCOM PAD[1] is used for data reception */ + SERCOM_USART_CTRLA_TXPO(0); /* SERCOM PAD[0] is used for data transmission */ + + SERCOM5->USART.CTRLB.reg = /* RXEM = 0 -> receiver disabled, LINCMD = 0 -> normal USART transmission, SFDE = 0 -> start-of-frame detection disabled, SBMODE = 0 -> one stop bit, CHSIZE = 0 -> 8 bits */ + SERCOM_USART_CTRLB_TXEN; /* transmitter enabled */ + SERCOM5->USART.CTRLC.reg = 0x00; + // 21.701388889 @ baud rate of 230400 bit/s, table 33-2, p 918 of DS60001507E + SERCOM5->USART.BAUD.reg = SERCOM_USART_BAUD_FRAC_FP(7) | SERCOM_USART_BAUD_FRAC_BAUD(21); + +// SERCOM5->USART.INTENSET.reg = SERCOM_USART_INTENSET_TXC; + SERCOM5->SPI.CTRLA.bit.ENABLE = 1; /* activate SERCOM */ + while(SERCOM5->USART.SYNCBUSY.bit.ENABLE); /* wait for SERCOM to be ready */ +#else +/* configure SERCOM0 on PA08 */ + PORT->Group[0].WRCONFIG.reg = + PORT_WRCONFIG_WRPINCFG | + PORT_WRCONFIG_WRPMUX | + PORT_WRCONFIG_PMUX(2) | /* function C */ + PORT_WRCONFIG_DRVSTR | + PORT_WRCONFIG_PINMASK(0x0100) | /* PA08 */ + PORT_WRCONFIG_PMUXEN; + + MCLK->APBAMASK.bit.SERCOM0_ = 1; + GCLK->PCHCTRL[SERCOM0_GCLK_ID_CORE].reg = GCLK_PCHCTRL_GEN_GCLK2 | GCLK_PCHCTRL_CHEN; /* setup SERCOM to use GLCK2 -> 80MHz */ + + SERCOM0->USART.CTRLA.reg = 0x00; /* disable SERCOM -> enable config */ + while(SERCOM0->USART.SYNCBUSY.bit.ENABLE); + + SERCOM0->USART.CTRLA.reg = /* CMODE = 0 -> async, SAMPA = 0, FORM = 0 -> USART frame, SMPR = 0 -> arithmetic baud rate */ + SERCOM_USART_CTRLA_SAMPR(1) | /* 0 = 16x / arithmetic baud rate, 1 = 16x / fractional baud rate */ +// SERCOM_USART_CTRLA_FORM(0) | /* 0 = USART Frame, 2 = LIN Master */ + SERCOM_USART_CTRLA_DORD | /* LSB first */ + SERCOM_USART_CTRLA_MODE(1) | /* 0 = Asynchronous, 1 = USART with internal clock */ + SERCOM_USART_CTRLA_RXPO(1) | /* SERCOM PAD[1] is used for data reception */ + SERCOM_USART_CTRLA_TXPO(0); /* SERCOM PAD[0] is used for data transmission */ + + SERCOM0->USART.CTRLB.reg = /* RXEM = 0 -> receiver disabled, LINCMD = 0 -> normal USART transmission, SFDE = 0 -> start-of-frame detection disabled, SBMODE = 0 -> one stop bit, CHSIZE = 0 -> 8 bits */ + SERCOM_USART_CTRLB_TXEN; /* transmitter enabled */ + SERCOM0->USART.CTRLC.reg = 0x00; + // 21.701388889 @ baud rate of 230400 bit/s, table 33-2, p 918 of DS60001507E + SERCOM0->USART.BAUD.reg = SERCOM_USART_BAUD_FRAC_FP(7) | SERCOM_USART_BAUD_FRAC_BAUD(21); + +// SERCOM0->USART.INTENSET.reg = SERCOM_USART_INTENSET_TXC; + SERCOM0->SPI.CTRLA.bit.ENABLE = 1; /* activate SERCOM */ + while(SERCOM0->USART.SYNCBUSY.bit.ENABLE); /* wait for SERCOM to be ready */ +#endif +} + +static inline void uart_send_buffer(uint8_t const *text, size_t len) +{ + for (size_t i = 0; i < len; ++i) { + BOARD_SERCOM->USART.DATA.reg = text[i]; + while((BOARD_SERCOM->USART.INTFLAG.reg & SERCOM_SPI_INTFLAG_TXC) == 0); + } +} + +static inline void uart_send_str(const char* text) +{ + while (*text) { + BOARD_SERCOM->USART.DATA.reg = *text++; + while((BOARD_SERCOM->USART.INTFLAG.reg & SERCOM_SPI_INTFLAG_TXC) == 0); + } +} + + +void board_init(void) +{ + init_clock(); + + SystemCoreClock = CONF_CPU_FREQUENCY; + +#if CFG_TUSB_OS == OPT_OS_NONE + SysTick_Config(CONF_CPU_FREQUENCY / 1000); +#endif + + uart_init(); +#if CFG_TUSB_DEBUG >= 2 + uart_send_str(BOARD_NAME " UART initialized\n"); + tu_printf(BOARD_NAME " reset cause %#02x\n", RSTC->RCAUSE.reg); +#endif + + // Led init + gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT); + gpio_set_pin_level(LED_PIN, 0); + +#if CFG_TUSB_DEBUG >= 2 + uart_send_str(BOARD_NAME " LED pin configured\n"); +#endif + +#if CFG_TUSB_OS == OPT_OS_FREERTOS + // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher ) + NVIC_SetPriority(USB_0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY); + NVIC_SetPriority(USB_1_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY); + NVIC_SetPriority(USB_2_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY); + NVIC_SetPriority(USB_3_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY); +#endif + + +#if TUSB_OPT_DEVICE_ENABLED +#if CFG_TUSB_DEBUG >= 2 + uart_send_str(BOARD_NAME " USB device enabled\n"); +#endif + + /* USB clock init + * The USB module requires a GCLK_USB of 48 MHz ~ 0.25% clock + * for low speed and full speed operation. */ + hri_gclk_write_PCHCTRL_reg(GCLK, USB_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK1_Val | GCLK_PCHCTRL_CHEN); + hri_mclk_set_AHBMASK_USB_bit(MCLK); + hri_mclk_set_APBBMASK_USB_bit(MCLK); + + // USB pin init + gpio_set_pin_direction(PIN_PA24, GPIO_DIRECTION_OUT); + gpio_set_pin_level(PIN_PA24, false); + gpio_set_pin_pull_mode(PIN_PA24, GPIO_PULL_OFF); + gpio_set_pin_direction(PIN_PA25, GPIO_DIRECTION_OUT); + gpio_set_pin_level(PIN_PA25, false); + gpio_set_pin_pull_mode(PIN_PA25, GPIO_PULL_OFF); + + gpio_set_pin_function(PIN_PA24, PINMUX_PA24H_USB_DM); + gpio_set_pin_function(PIN_PA25, PINMUX_PA25H_USB_DP); + + +#if CFG_TUSB_DEBUG >= 2 + uart_send_str(BOARD_NAME " USB device configured\n"); +#endif +#endif +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + gpio_set_pin_level(LED_PIN, state); +} + +uint32_t board_button_read(void) +{ + // this board has no button + return 0; +} + +int board_uart_read(uint8_t* buf, int len) +{ + (void) buf; (void) len; + return 0; +} + +int board_uart_write(void const * buf, int len) +{ + if (len < 0) { + uart_send_str(buf); + } else { + uart_send_buffer(buf, len); + } + return len; +} + +#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 + +// Required by __libc_init_array in startup code if we are compiling using +// -nostdlib/-nostartfiles. +void _init(void) +{ + +} |