kuwoyuki
8adc726b0b
Squashed commit of the following: commit 5f16309f629b9928d2134b85ae64af69bc3ebbcd Author: kuwoyuki <kuwoyuki@cock.li> Date: Sun Nov 24 22:55:15 2024 +0600 fix: Makefile, improve onewire retries commit 55496a3bda941b52ff349dc75c9c06eb5a37c07d Author: kuwoyuki <kuwoyuki@cock.li> Date: Mon Nov 18 00:41:18 2024 +0600 fix: make onewire validity less strict commit 3428a9bc9792508972ce3e7e4e35a64f047bca10 Author: kuwoyuki <kuwoyuki@cock.li> Date: Sun Nov 17 23:57:55 2024 +0600 chore: rm bins commit 1594e5ed430522b15466c8afa62ff7fb1b28947c Author: kuwoyuki <kuwoyuki@cock.li> Date: Sun Nov 17 23:32:01 2024 +0600 chore: unplatformiofy
119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
#ifndef CH32V003_ONEWIRE_H
|
|
#define CH32V003_ONEWIRE_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include "ch32v003fun.h"
|
|
|
|
// GPIO Direct Access Definitions
|
|
#ifndef OneWire_Direct_GPIO_h
|
|
#define OneWire_Direct_GPIO_h
|
|
|
|
static inline __attribute__((always_inline)) uint8_t directRead() {
|
|
return (GPIOB->INDR & (1 << 9)) ? 1 : 0;
|
|
}
|
|
|
|
static inline void directModeInput() {
|
|
GPIOB->CFGHR &= ~(0xF << (4 * (9 - 8)));
|
|
GPIOB->CFGHR |= (GPIO_CNF_IN_FLOATING << (4 * (9 - 8)));
|
|
}
|
|
|
|
static inline void directModeOutput() {
|
|
GPIOB->CFGHR &= ~(0xF << (4 * (9 - 8)));
|
|
GPIOB->CFGHR |= ((GPIO_Speed_50MHz | GPIO_CNF_OUT_PP) << (4 * (9 - 8)));
|
|
}
|
|
|
|
static inline __attribute__((always_inline)) void directWriteLow() {
|
|
GPIOB->BCR = (1 << 9);
|
|
}
|
|
|
|
static inline __attribute__((always_inline)) void directWriteHigh() {
|
|
GPIOB->BSHR = (1 << 9);
|
|
}
|
|
|
|
#define DIRECT_READ() directRead()
|
|
#define DIRECT_WRITE_LOW() directWriteLow()
|
|
#define DIRECT_WRITE_HIGH() directWriteHigh()
|
|
#define DIRECT_MODE_INPUT() directModeInput()
|
|
#define DIRECT_MODE_OUTPUT() directModeOutput()
|
|
#endif
|
|
|
|
// timing configuration
|
|
// time between line check retries
|
|
#define ONEWIRE_RESET_RETRY_TIME 2
|
|
// reset cycle
|
|
#define ONEWIRE_RESET_LOW_TIME 480
|
|
#define ONEWIRE_RESET_SAMPLE_TIME 60
|
|
#define ONEWIRE_RESET_POST_TIME 410
|
|
|
|
// write 1 bit
|
|
#define ONEWIRE_WRITE_1_LOW_TIME 6
|
|
#define ONEWIRE_WRITE_1_TOTAL_TIME 64
|
|
|
|
// write 0 bit
|
|
#define ONEWIRE_WRITE_0_LOW_TIME 80
|
|
#define ONEWIRE_WRITE_0_TOTAL_TIME 84
|
|
|
|
// read bit
|
|
#define ONEWIRE_READ_INIT_LOW_TIME 6
|
|
#define ONEWIRE_READ_SAMPLE_TIME 8
|
|
#define ONEWIRE_READ_TOTAL_TIME 64
|
|
|
|
// OneWire Function Declarations
|
|
|
|
// Initialize the OneWire bus
|
|
void OneWireBegin(void);
|
|
|
|
// Perform a 1-Wire reset cycle. Returns 1 if a device responds with a presence
|
|
// pulse
|
|
uint8_t OneWireReset(void);
|
|
|
|
// Select a device on the bus using its ROM code
|
|
void OneWireSelect(const uint8_t rom[8]);
|
|
|
|
// Skip ROM selection - addresses all devices on the bus
|
|
void OneWireSkip(void);
|
|
|
|
// Write a byte to the bus. If 'power' is true, maintain strong pullup after
|
|
// write
|
|
void OneWireWrite(uint8_t v, uint8_t power);
|
|
|
|
// Write multiple bytes to the bus
|
|
void OneWireWriteBytes(const uint8_t *buf, uint16_t count, bool power);
|
|
|
|
// Read a byte from the bus
|
|
uint8_t OneWireRead(void);
|
|
|
|
// Read multiple bytes from the bus
|
|
void OneWireReadBytes(uint8_t *buf, uint16_t count);
|
|
|
|
// Write a single bit to the bus
|
|
void OneWireWriteBit(uint8_t v);
|
|
|
|
// Read a single bit from the bus
|
|
uint8_t OneWireReadBit(void);
|
|
|
|
// Stop forcing power onto the bus
|
|
void OneWireDepower(void);
|
|
|
|
// Reset the search state
|
|
void OneWireResetSearch(void);
|
|
|
|
// Setup search to find devices of a specific family code
|
|
void OneWireTargetSearch(uint8_t family_code);
|
|
|
|
// Search for the next device on the bus
|
|
bool OneWireSearch(uint8_t *newAddr, bool search_mode);
|
|
|
|
// Calculate 8-bit CRC
|
|
uint8_t OneWireCrc8(const uint8_t *addr, uint8_t len);
|
|
|
|
// Check if received CRC matches calculated CRC
|
|
bool OneWireCheckCrc16(const uint8_t *input, uint16_t len,
|
|
const uint8_t *inverted_crc, uint16_t crc);
|
|
|
|
// Calculate 16-bit CRC
|
|
uint16_t OneWireCrc16(const uint8_t *input, uint16_t len, uint16_t crc);
|
|
|
|
#endif // CH32V003_ONEWIRE_H
|