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#include "led_driver_config.h"
static void LED_TIMConfig ( void );
static void LED_SPIConfig ( void );
// ----------------------------------------------------------------------------
// Подготовка железа, прерываний и тд для работы с RGB светодиодиками
// ----------------------------------------------------------------------------
void LED_Driver_Config ( void )
{
LED_TIMConfig ();
LED_SPIConfig ();
}
// ----------------------------------------------------------------------------
//
// ----------------------------------------------------------------------------
static void LED_TIMConfig ( void )
{
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* LED_TIMx clock enable */
LED_RCC_APBxPeriphClockCmd ( LED_TIM_RCC, ENABLE );
/* Enable the LED_TIMx gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = LED_TIM_IRQx;
NVIC_InitStructure.NVIC_IRQChannelPriority = 2; // Установим приоритет ниже, чем у модуля NixieDriver
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init ( &NVIC_InitStructure );
/* -----------------------------------------------------------------------
In this example TIM7 counter clock (TIM7CLK) is set to APB1 clock (PCLK1), since
APB1 prescaler is set to 1 and TIM7 prescaler is set to 0.
In this example TIM7 input clock (TIM7CLK) is set to APB1 clock (PCLK1),
since APB1 prescaler is set to 1.
TIM7CLK = PCLK1 = HCLK = SystemCoreClock
With Prescaler set to 479 and Period to 24999, the TIM7 counter is updated each 250 ms
(i.e. and interrupt is generated each 250 ms)
TIM7 counter clock = TIM7CLK /((Prescaler + 1)*(Period + 1))
= 48 MHz / ((25000)*(480))
= 4 Hz
==> TIM7 counter period = 250 ms
Note:
SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f0xx.c file.
Each time the core clock (HCLK) changes, user had to call SystemCoreClockUpdate()
function to update SystemCoreClock variable value. Otherwise, any configuration
based on this variable will be incorrect.
----------------------------------------------------------------------- */
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 1000; // Это миксросекунды //24999
TIM_TimeBaseStructure.TIM_Prescaler = (SystemCoreClock/1000000)-1; //479;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit ( LED_TIMx, &TIM_TimeBaseStructure );
/* LED_TIMx Interrupts enable */
TIM_ITConfig ( LED_TIMx, TIM_IT_Update, ENABLE );
/* LED_TIMx enable counter */
TIM_Cmd ( LED_TIMx, ENABLE );
}
// ----------------------------------------------------------------------------
//
// ----------------------------------------------------------------------------
static void LED_SPIConfig ( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the SPI periph */
LED_SPIx_RCC_APBxPeriphClockCmd ( LED_SPIx_CLK, ENABLE );
/* Enable SCK, MOSI, MISO and NSS GPIO clocks */
RCC_AHBPeriphClockCmd ( LED_SPIx_SCK_GPIO_CLK |
LED_SPIx_MOSI_GPIO_CLK |
LED_SPIx_ST_GPIO_CLK,
ENABLE );
GPIO_PinAFConfig ( LED_SPIx_SCK_GPIO_PORT, LED_SPIx_SCK_SOURCE, LED_SPIx_SCK_AF );
GPIO_PinAFConfig ( LED_SPIx_MOSI_GPIO_PORT, LED_SPIx_MOSI_SOURCE, LED_SPIx_MOSI_AF );
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = LED_SPIx_SCK_PIN;
GPIO_Init ( LED_SPIx_SCK_GPIO_PORT, &GPIO_InitStructure );
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = LED_SPIx_MOSI_PIN;
GPIO_Init ( LED_SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure );
/* GPIO ST pin configuration */
GPIO_InitStructure.GPIO_Pin = LED_SPIx_ST_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
GPIO_Init ( LED_SPIx_ST_GPIO_PORT, &GPIO_InitStructure );
/* SPI configuration -------------------------------------------------------*/
SPI_I2S_DeInit ( LED_SPIx );
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_Init ( LED_SPIx, &SPI_InitStructure );
/* Enable the SPI peripheral */
SPI_Cmd ( LED_SPIx, ENABLE );
/* Configure the SPI interrupt priority */
NVIC_InitStructure.NVIC_IRQChannel = LED_SPIx_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init ( &NVIC_InitStructure );
/* Enable the Rx buffer not empty interrupt */
SPI_I2S_ITConfig ( LED_SPIx, SPI_I2S_IT_RXNE, ENABLE );
LED_ST_PIN_RESET;
}
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