5
mirror of https://gitlab.com/zephray/glider.git synced 2025-12-30 12:47:27 +00:00
glider/fw/User/board.c
2025-12-27 16:15:26 +08:00

114 lines
3.8 KiB
C

//
// Grimoire
// Copyright 2025 Wenting Zhang
//
// 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 "platform.h"
#include "board.h"
#include "app.h"
static uint32_t loop_per_us = 0;
size_t board_usb_get_serial(uint16_t desc_str1[], size_t max_chars) {
uint8_t uid[16] __attribute__ ((aligned(4)));
size_t uid_len;
uint32_t* uid32 = (uint32_t*) (uintptr_t) uid;
*uid32 = board_get_uid();
uid_len = 4;
if ( uid_len > max_chars / 2 ) uid_len = max_chars / 2;
for ( size_t i = 0; i < uid_len; i++ ) {
for ( size_t j = 0; j < 2; j++ ) {
const char nibble_to_hex[16] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
uint8_t const nibble = (uid[i] >> (j * 4)) & 0xf;
desc_str1[i * 2 + (1 - j)] = nibble_to_hex[nibble]; // UTF-16-LE
}
}
return 2 * uid_len;
}
void board_late_init(void) {
uint32_t iter_count = 100;
uint32_t elapsed_ms;
do {
volatile uint32_t x = iter_count;
uint32_t start = xTaskGetTickCount() * portTICK_PERIOD_MS;
while (x--);
uint32_t end = xTaskGetTickCount() * portTICK_PERIOD_MS;
elapsed_ms = end - start;
if (elapsed_ms > 10)
break; // At least 10ms elapsed
iter_count *= 10;
} while (1);
loop_per_us = iter_count / (elapsed_ms * 1000);
syslog_printf("Delay loop calibrated, iterations per us: %d", loop_per_us);
}
void sleep_us(uint32_t us) {
volatile uint32_t x = us * loop_per_us;
while (x--);
}
void board_switch_spi_freq(SPI_HandleTypeDef *spi, uint32_t target) {
HAL_SPI_DeInit(spi);
if (target >= 24000000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
else if (target > 12000000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4;
else if (target > 6000000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
else if (target > 3000000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
else if (target > 1500000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
else if (target > 750000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
else if (target > 375000)
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_128;
else
spi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
HAL_SPI_Init(spi);
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
if (GPIO_Pin == GPIO_PIN_15) {
usbpd_isr();
}
}
// TODO: Use semaphore?
// TODO: Handle more than 1 SPI instance
static volatile bool tx_complete = false;
void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi) {
tx_complete = true;
}
void spi_wait_dma_complete(SPI_HandleTypeDef *spi) {
while (!tx_complete);
tx_complete = false;
}