restructuring

deprecated/F1/1_wire/onewire.h

@@ -0,0 +1,140 @@
+/*
+ * onewire.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#pragma once
+#ifndef __ONEWIRE_H__
+#define __ONEWIRE_H__
+
+#include "main.h"
+#include "hardware_ini.h"
+
+// 20 bytes x 8bits
+#define TIM2_DMABUFF_SIZE 160
+
+// freq = 1MHz
+// ARR values: 1000 for reset, 100 for data in/out
+// CCR4 values: 500 for reset, 60 for sending 0 or reading, <15 for sending 1
+// CCR3 values: >550 if there's devices on line (on reset), >12 (typ.15) - read 0, < 12 (typ.1) - read 1
+#define RESET_LEN         ((uint16_t)1000)
+#define BIT_LEN           ((uint16_t)100)
+#define RESET_P           ((uint16_t)500)
+#define BIT_ONE_P         ((uint16_t)10)
+#define BIT_ZERO_P        ((uint16_t)60)
+#define BIT_READ_P        ((uint16_t)5)
+#define RESET_BARRIER     ((uint16_t)550)
+#define ONE_ZERO_BARRIER  ((uint16_t)10)
+
+#define ERR_TEMP_VAL  ((int32_t)200000)
+
+typedef struct{
+	uint8_t bytes[8];
+} OW_ID;
+
+extern OW_ID id_array[];
+
+#define OW_MAX_NUM 8
+
+void init_ow_dmatimer();
+void run_dmatimer();
+extern uint8_t ow_done;
+#define OW_READY()  (ow_done)
+void ow_dma_on();
+uint8_t OW_add_byte(uint8_t ow_byte);
+uint8_t OW_add_read_seq(uint8_t Nbytes);
+void read_from_OWbuf(uint8_t start_idx, uint8_t N, uint8_t *outbuf);
+void ow_reset();
+uint8_t OW_get_reset_status();
+
+extern int tum2buff_ctr;
+#define OW_reset_buffer()   do{tum2buff_ctr = 0;}while(0)
+
+extern uint8_t ow_data_ready;
+extern uint8_t ow_measurements_done;
+#define OW_DATA_READY()       (ow_data_ready)
+#define OW_CLEAR_READY_FLAG() do{ow_data_ready = 0;}while(0)
+#define OW_MEASUREMENTS_DONE()  (ow_measurements_done)
+#define OW_CLEAR_DONE_FLAG()  do{ow_measurements_done = 0;}while(0)
+
+void OW_process();
+void OW_fill_next_ID();
+void OW_send_read_seq();
+uint8_t OW_Send(uint8_t sendReset, uint8_t *command, uint8_t cLen);
+
+extern int32_t temperature;
+extern int8_t Ncur;
+void OW_read_next_temp();
+#define OW_current_temp()  (temperature)
+#define OW_current_num()   (Ncur)
+
+/*
+ * thermometer commands
+ * send them with bus reset!
+ */
+// find devices
+#define OW_SEARCH_ROM       (0xf0)
+// read device (when it is alone on the bus)
+#define OW_READ_ROM         (0x33)
+// send device ID (after this command - 8 bytes of ID)
+#define OW_MATCH_ROM        (0x55)
+// broadcast command
+#define OW_SKIP_ROM         (0xcc)
+// find devices with critical conditions
+#define OW_ALARM_SEARCH     (0xec)
+/*
+ * thermometer functions
+ * send them without bus reset!
+ */
+// start themperature reading
+#define OW_CONVERT_T         (0x44)
+// write critical temperature to device's RAM
+#define OW_SCRATCHPAD        (0x4e)
+// read whole device flash
+#define OW_READ_SCRATCHPAD   (0xbe)
+// copy critical themperature from device's RAM to its EEPROM
+#define OW_COPY_SCRATCHPAD   (0x48)
+// copy critical themperature from EEPROM to RAM (when power on this operation runs automatically)
+#define OW_RECALL_E2         (0xb8)
+// check whether there is devices wich power up from bus
+#define OW_READ_POWER_SUPPLY (0xb4)
+
+
+/*
+ * thermometer identificator is: 8bits CRC, 48bits serial, 8bits device code (10h)
+ * Critical temperatures is T_H and T_L
+ * T_L is lowest allowed temperature
+ * T_H is highest -//-
+ * format T_H and T_L: 1bit sigh + 7bits of data
+ */
+
+
+/*
+ * RAM register:
+ * 0 - themperature: 1 ADU == 0.5 degrC
+ * 1 - sign (0 - T>0 degrC ==> T=byte0; 1 - T<0 degrC ==> T=byte0-0xff+1)
+ * 2 - T_H
+ * 3 - T_L
+ * 4 - 0xff (reserved)
+ * 5 - 0xff (reserved)
+ * 6 - COUNT_REMAIN (0x0c)
+ * 7 - COUNT PER DEGR (0x10)
+ * 8 - CRC
+ */
+
+
+#endif // __ONEWIRE_H__