Templates/DS18B20_Library
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библиотека для stm32f103

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This commit is contained in:
Razvalyaev
2025-06-20 14:46:25 +03:00
parent 0689046c85
commit c2dca42be6
15 changed files with 118 additions and 1090 deletions
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58
DS18B20/ow_port.c
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@@ -6,6 +6,8 @@
*/
#include "ow_port.h"
#include "onewire.h"
#include "tim.h"
uint32_t pin_pos = (DS_Pin_Numb < 8) ? (DS_Pin_Numb * 4) : ((DS_Pin_Numb - 8) * 4);
/**
* @brief The internal function is used as gpio pin mode
@@ -15,31 +17,22 @@
void OneWire_Pin_Mode(OneWire_t* OW, PinMode Mode)
{
#ifdef CMSIS_Driver
static uint32_t pin_cr_numb = 4;
static int get_pin_numb = 0;
if(get_pin_numb)
volatile uint32_t *config_reg = (DS_Pin_Numb < 8) ? &(OW->DataPort->CRL) : &(OW->DataPort->CRH);
// Ñáðîñ òåêóùèõ 4 áèò (CNF + MODE)
*config_reg &= ~(0xF << pin_pos);
if (Mode == Input)
{
get_pin_numb = 0;
for(int i = 0; i < 8; i++)
{
if((OW->DataPin >> i) == 0x1)
pin_cr_numb = i*4;
}
for(int i = 8; i < 16; i++)
{
if((OW->DataPin >> i) == 0x1)
pin_cr_numb = (i-8)*4;
}
// Âõîä ñ ïîäòÿæêîé èëè áåç – íàïðèìåð, CNF = 0b01, MODE = 0b00
// Çäåñü óñòàíàâëèâàåì âõîä ñ ïîäòÿæêîé:
*config_reg |= (0x8 << pin_pos); // CNF=10, MODE=00 (âõîä ñ ïîäòÿæêîé)
OW->DataPort->ODR |= (1 << DS_Pin_Numb); // Âêëþ÷èòü ïîäòÿæêó ââåðõ
}
else
{
// Âûõîä push-pull, 2 ÌÃö – MODE = 0b10, CNF = 0b00
*config_reg |= (0x2 << pin_pos);
}
if(Mode == Input)
{
OW->DataPort->CRH &= ~((GPIO_CRL_CNF0 | GPIO_CRL_MODE0) << pin_cr_numb);
OW->DataPort->CRH |= (1 << (pin_cr_numb+2));
}else{
OW->DataPort->CRH &= ~((GPIO_CRL_CNF0 | GPIO_CRL_MODE0) << pin_cr_numb);
OW->DataPort->CRH |= (3 << pin_cr_numb);
}
#else
#ifdef LL_Driver
if(Mode == Input)
@@ -109,4 +102,21 @@ uint8_t OneWire_Pin_Read(OneWire_t* OW)
return HAL_GPIO_ReadPin(OW->DataPort, OW->DataPin);
#endif
#endif
}
}
uint32_t tim_1us_period = OW_TIM_1US_PERIOD;
void OneWire_Delay_uw(uint32_t us)
{
uint32_t ticks = us * tim_1us_period;
uint16_t start = OW_TIM->CNT;
uint32_t elapsed = 0;
uint16_t prev = start;
while (elapsed < ticks)
{
uint16_t curr = OW_TIM->CNT;
uint16_t delta = (uint16_t)(curr - prev); // ó÷¸ò ïåðåïîëíåíèÿ
elapsed += delta;
prev = curr;
}
}