/* * stm-rtc.c * ---------- * Functions for using the externally connected RTC chip. * * Copyright (c) 2015-2016, NORDUnet A/S All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of the NORDUnet nor the names of its contributors may * be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "stm32f4xx_hal.h" #include "stm-rtc.h" I2C_HandleTypeDef hi2c_rtc; HAL_StatusTypeDef rtc_device_ready(uint16_t i2c_addr) { return HAL_I2C_IsDeviceReady (&hi2c_rtc, i2c_addr, 10, 1000); } HAL_StatusTypeDef rtc_enable_oscillator() { uint8_t buf[2]; HAL_StatusTypeDef res; buf[0] = 0; /* Offset of RTCSEC */ buf[1] = 1 << 7; /* datasheet REGISTERS 5-1, bit 7 = ST (start oscillator) */ while (HAL_I2C_Master_Transmit (&hi2c_rtc, RTC_RTC_ADDR_W, buf, 2, 1000) != HAL_OK) { res = HAL_I2C_GetError (&hi2c_rtc); if (res != HAL_I2C_ERROR_AF) { return res; } } return HAL_OK; } HAL_StatusTypeDef rtc_send_byte(const uint16_t i2c_addr, uint8_t value, const uint16_t timeout) { HAL_StatusTypeDef res; while (HAL_I2C_Master_Transmit (&hi2c_rtc, i2c_addr, &value, 1, timeout) != HAL_OK) { res = HAL_I2C_GetError (&hi2c_rtc); if (res != HAL_I2C_ERROR_AF) { return res; } } return HAL_OK; } HAL_StatusTypeDef rtc_read_bytes (const uint16_t i2c_addr, uint8_t *buf, const uint8_t len, const uint16_t timeout) { HAL_StatusTypeDef res; while (HAL_I2C_Master_Receive (&hi2c_rtc, i2c_addr, buf, len, 1000) != HAL_OK) { res = HAL_I2C_GetError (&hi2c_rtc); if (res != HAL_I2C_ERROR_AF) { return res; } } return HAL_OK; } lob: 26ba2499efa637299038af45bdb4967945454f26 (plain) (blame) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

/*
 * errorstrings.c
 * --------------
 * Translate HAL error codes to strings.
 *
 * Authors: Rob Austein
 * Copyright (c) 2015, NORDUnet A/S
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the NORDUnet nor the names of its contributors may
 *   be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "hal.h"

#define DEFINE_HAL_ERROR(_code_,_text_) \
  case _code_: return _text_;

const char *hal_error_string(const hal_error_t code)
{
  switch (code) {
    HAL_ERROR_LIST;
  default:
    return "Unknown HAL error code";
  }
}

#undef DEFINE_HAL_ERROR

/*
 * Local variables:
 * indent-tabs-mode: nil
 * End:
 */
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-05 21:42:58 +0000