RTC-8564NB Real Time Clock Module by EPSON TOYOCOM
RTC8564.cpp@1:d1b58c478a7a, 2017-08-23 (annotated)
- Committer:
- kenjiArai
- Date:
- Wed Aug 23 09:27:22 2017 +0000
- Revision:
- 1:d1b58c478a7a
- Parent:
- 0:863510ffa8ff
countermeasure for NonCopyable
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kenjiArai | 0:863510ffa8ff | 1 | /* |
kenjiArai | 0:863510ffa8ff | 2 | * mbed library program |
kenjiArai | 0:863510ffa8ff | 3 | * Control RTC-8564NB Real Time Clock Module |
kenjiArai | 0:863510ffa8ff | 4 | * EPSON TOYOCOM |
kenjiArai | 0:863510ffa8ff | 5 | * |
kenjiArai | 1:d1b58c478a7a | 6 | * Copyright (c) 2015,'17 Kenji Arai / JH1PJL |
kenjiArai | 0:863510ffa8ff | 7 | * http://www.page.sannet.ne.jp/kenjia/index.html |
kenjiArai | 0:863510ffa8ff | 8 | * http://mbed.org/users/kenjiArai/ |
kenjiArai | 1:d1b58c478a7a | 9 | * Created: Feburary 1st, 2015 |
kenjiArai | 1:d1b58c478a7a | 10 | * Revised: August 23rd, 2017 |
kenjiArai | 0:863510ffa8ff | 11 | */ |
kenjiArai | 0:863510ffa8ff | 12 | |
kenjiArai | 0:863510ffa8ff | 13 | #include "mbed.h" |
kenjiArai | 0:863510ffa8ff | 14 | #include "RTC8564.h" |
kenjiArai | 0:863510ffa8ff | 15 | |
kenjiArai | 1:d1b58c478a7a | 16 | RTC8564::RTC8564 (PinName p_sda, PinName p_scl) |
kenjiArai | 1:d1b58c478a7a | 17 | : _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p) |
kenjiArai | 0:863510ffa8ff | 18 | { |
kenjiArai | 0:863510ffa8ff | 19 | RTC8564_addr = RTC8564ADDR; |
kenjiArai | 0:863510ffa8ff | 20 | } |
kenjiArai | 0:863510ffa8ff | 21 | |
kenjiArai | 1:d1b58c478a7a | 22 | RTC8564::RTC8564 (I2C& p_i2c) |
kenjiArai | 1:d1b58c478a7a | 23 | : _i2c(p_i2c) |
kenjiArai | 0:863510ffa8ff | 24 | { |
kenjiArai | 0:863510ffa8ff | 25 | RTC8564_addr = RTC8564ADDR; |
kenjiArai | 0:863510ffa8ff | 26 | } |
kenjiArai | 0:863510ffa8ff | 27 | |
kenjiArai | 0:863510ffa8ff | 28 | /////////////// Read RTC data ///////////////////////////// |
kenjiArai | 0:863510ffa8ff | 29 | void RTC8564::get_time_rtc (tm *t) |
kenjiArai | 0:863510ffa8ff | 30 | { |
kenjiArai | 0:863510ffa8ff | 31 | read_rtc_std(t); |
kenjiArai | 0:863510ffa8ff | 32 | } |
kenjiArai | 0:863510ffa8ff | 33 | |
kenjiArai | 0:863510ffa8ff | 34 | void RTC8564::read_rtc_std (tm *t) |
kenjiArai | 0:863510ffa8ff | 35 | { |
kenjiArai | 0:863510ffa8ff | 36 | rtc_time time; |
kenjiArai | 0:863510ffa8ff | 37 | |
kenjiArai | 0:863510ffa8ff | 38 | read_rtc_direct(&time); |
kenjiArai | 0:863510ffa8ff | 39 | t->tm_sec = time.rtc_seconds; |
kenjiArai | 0:863510ffa8ff | 40 | t->tm_min = time.rtc_minutes; |
kenjiArai | 0:863510ffa8ff | 41 | t->tm_hour = time.rtc_hours; |
kenjiArai | 0:863510ffa8ff | 42 | t->tm_mday = time.rtc_date; |
kenjiArai | 0:863510ffa8ff | 43 | if ( time.rtc_weekday == RTC_Wk_Sunday) { |
kenjiArai | 0:863510ffa8ff | 44 | t->tm_wday = 0; // Sun is not 7 but 0 |
kenjiArai | 0:863510ffa8ff | 45 | } else { |
kenjiArai | 0:863510ffa8ff | 46 | t->tm_wday = time.rtc_weekday; |
kenjiArai | 0:863510ffa8ff | 47 | } |
kenjiArai | 0:863510ffa8ff | 48 | t->tm_mon = time.rtc_month - 1; |
kenjiArai | 0:863510ffa8ff | 49 | t->tm_year = time.rtc_year_raw + 100; |
kenjiArai | 0:863510ffa8ff | 50 | t->tm_isdst= 0; |
kenjiArai | 0:863510ffa8ff | 51 | } |
kenjiArai | 0:863510ffa8ff | 52 | |
kenjiArai | 0:863510ffa8ff | 53 | /////////////// Write data to RTC ///////////////////////// |
kenjiArai | 0:863510ffa8ff | 54 | void RTC8564::set_time_rtc (tm *t) |
kenjiArai | 0:863510ffa8ff | 55 | { |
kenjiArai | 0:863510ffa8ff | 56 | write_rtc_std(t); |
kenjiArai | 0:863510ffa8ff | 57 | } |
kenjiArai | 0:863510ffa8ff | 58 | |
kenjiArai | 0:863510ffa8ff | 59 | void RTC8564::write_rtc_std (tm *t) |
kenjiArai | 0:863510ffa8ff | 60 | { |
kenjiArai | 0:863510ffa8ff | 61 | rtc_time time; |
kenjiArai | 0:863510ffa8ff | 62 | |
kenjiArai | 0:863510ffa8ff | 63 | time.rtc_seconds = t->tm_sec; |
kenjiArai | 0:863510ffa8ff | 64 | time.rtc_minutes = t->tm_min; |
kenjiArai | 0:863510ffa8ff | 65 | time.rtc_hours = t->tm_hour; |
kenjiArai | 0:863510ffa8ff | 66 | time.rtc_date = t->tm_mday; |
kenjiArai | 0:863510ffa8ff | 67 | if ( t->tm_wday == 0) { |
kenjiArai | 0:863510ffa8ff | 68 | time.rtc_weekday = RTC_Wk_Sunday; |
kenjiArai | 0:863510ffa8ff | 69 | } else { |
kenjiArai | 0:863510ffa8ff | 70 | time.rtc_weekday = t->tm_wday; |
kenjiArai | 0:863510ffa8ff | 71 | } |
kenjiArai | 0:863510ffa8ff | 72 | time.rtc_month = t->tm_mon + 1; |
kenjiArai | 0:863510ffa8ff | 73 | time.rtc_year_raw = t->tm_year - 100; |
kenjiArai | 0:863510ffa8ff | 74 | write_rtc_direct(&time); |
kenjiArai | 0:863510ffa8ff | 75 | } |
kenjiArai | 0:863510ffa8ff | 76 | |
kenjiArai | 0:863510ffa8ff | 77 | /////////////// Read/Write specific register ////////////// |
kenjiArai | 0:863510ffa8ff | 78 | uint8_t RTC8564::read_reg_byte(uint8_t reg) |
kenjiArai | 0:863510ffa8ff | 79 | { |
kenjiArai | 0:863510ffa8ff | 80 | uint8_t dt[2]; |
kenjiArai | 0:863510ffa8ff | 81 | |
kenjiArai | 0:863510ffa8ff | 82 | dt[0] = reg; |
kenjiArai | 0:863510ffa8ff | 83 | _i2c.write((int)RTC8564_addr, (char *)dt, 1, true); |
kenjiArai | 0:863510ffa8ff | 84 | _i2c.read((int)RTC8564_addr, (char *)dt, 1, false); |
kenjiArai | 0:863510ffa8ff | 85 | return dt[0]; |
kenjiArai | 0:863510ffa8ff | 86 | } |
kenjiArai | 0:863510ffa8ff | 87 | |
kenjiArai | 0:863510ffa8ff | 88 | uint8_t RTC8564::write_reg_byte(uint8_t reg, uint8_t data) |
kenjiArai | 0:863510ffa8ff | 89 | { |
kenjiArai | 0:863510ffa8ff | 90 | uint8_t dt[2]; |
kenjiArai | 0:863510ffa8ff | 91 | |
kenjiArai | 0:863510ffa8ff | 92 | dt[0] = reg; |
kenjiArai | 0:863510ffa8ff | 93 | dt[1] = data; |
kenjiArai | 0:863510ffa8ff | 94 | _i2c.write((int)RTC8564_addr, (char *)dt, 2, false); |
kenjiArai | 0:863510ffa8ff | 95 | dt[1] = read_reg_byte(reg); |
kenjiArai | 0:863510ffa8ff | 96 | return dt[1]; |
kenjiArai | 0:863510ffa8ff | 97 | } |
kenjiArai | 0:863510ffa8ff | 98 | |
kenjiArai | 0:863510ffa8ff | 99 | /////////////// I2C Freq. ///////////////////////////////// |
kenjiArai | 0:863510ffa8ff | 100 | void RTC8564::frequency(int hz) |
kenjiArai | 0:863510ffa8ff | 101 | { |
kenjiArai | 0:863510ffa8ff | 102 | _i2c.frequency(hz); |
kenjiArai | 0:863510ffa8ff | 103 | } |
kenjiArai | 0:863510ffa8ff | 104 | |
kenjiArai | 0:863510ffa8ff | 105 | /////////////// Read/Write RTC another format ///////////// |
kenjiArai | 0:863510ffa8ff | 106 | void RTC8564::read_rtc_direct (rtc_time *tm) |
kenjiArai | 0:863510ffa8ff | 107 | { |
kenjiArai | 0:863510ffa8ff | 108 | uint8_t dt; |
kenjiArai | 0:863510ffa8ff | 109 | |
kenjiArai | 0:863510ffa8ff | 110 | dt = RTC8564_REG_CONTL1; |
kenjiArai | 0:863510ffa8ff | 111 | _i2c.write((int)RTC8564_addr, (char *)dt, 1, true); |
kenjiArai | 0:863510ffa8ff | 112 | _i2c.read((int)RTC8564_addr, (char *)rtc_buf, RTC8564_REG_TIMER + 1, false); |
kenjiArai | 0:863510ffa8ff | 113 | tm->rtc_seconds = bcd2bin(rtc_buf[RTC8564_REG_SEC] & 0x7f); |
kenjiArai | 0:863510ffa8ff | 114 | tm->rtc_minutes = bcd2bin(rtc_buf[RTC8564_REG_MIN] & 0x7f); |
kenjiArai | 0:863510ffa8ff | 115 | tm->rtc_hours = bcd2bin(rtc_buf[RTC8564_REG_HOUR] & 0x3f); |
kenjiArai | 0:863510ffa8ff | 116 | tm->rtc_date = bcd2bin(rtc_buf[RTC8564_REG_DAY] & 0x3f); |
kenjiArai | 0:863510ffa8ff | 117 | tm->rtc_weekday = rtc_buf[RTC8564_REG_WDAY] & 0x07; |
kenjiArai | 0:863510ffa8ff | 118 | tm->rtc_month = bcd2bin(rtc_buf[RTC8564_REG_MON] & 0x1f); |
kenjiArai | 0:863510ffa8ff | 119 | tm->rtc_year_raw= bcd2bin(rtc_buf[RTC8564_REG_YEAR]); |
kenjiArai | 0:863510ffa8ff | 120 | tm->rtc_year = tm->rtc_year_raw + 100 + 1900; |
kenjiArai | 0:863510ffa8ff | 121 | } |
kenjiArai | 0:863510ffa8ff | 122 | |
kenjiArai | 0:863510ffa8ff | 123 | void RTC8564::write_rtc_direct (rtc_time *tm) |
kenjiArai | 0:863510ffa8ff | 124 | { |
kenjiArai | 0:863510ffa8ff | 125 | uint8_t dt[2]; |
kenjiArai | 0:863510ffa8ff | 126 | |
kenjiArai | 0:863510ffa8ff | 127 | rtc_buf[RTC8564_REG_YEAR - 1] = bin2bcd(tm->rtc_year_raw); |
kenjiArai | 0:863510ffa8ff | 128 | rtc_buf[RTC8564_REG_MON - 1] = bin2bcd(tm->rtc_month); |
kenjiArai | 0:863510ffa8ff | 129 | rtc_buf[RTC8564_REG_WDAY - 1] = (tm->rtc_weekday & 0x07); |
kenjiArai | 0:863510ffa8ff | 130 | rtc_buf[RTC8564_REG_DAY - 1] = bin2bcd(tm->rtc_date); |
kenjiArai | 0:863510ffa8ff | 131 | rtc_buf[RTC8564_REG_HOUR - 1] = bin2bcd(tm->rtc_hours); |
kenjiArai | 0:863510ffa8ff | 132 | rtc_buf[RTC8564_REG_MIN - 1] = bin2bcd(tm->rtc_minutes); |
kenjiArai | 0:863510ffa8ff | 133 | rtc_buf[RTC8564_REG_SEC - 1] = bin2bcd(tm->rtc_seconds); |
kenjiArai | 0:863510ffa8ff | 134 | dt[0] = RTC8564_REG_CONTL1; |
kenjiArai | 0:863510ffa8ff | 135 | dt[1] = 0x20; |
kenjiArai | 0:863510ffa8ff | 136 | _i2c.write((int)RTC8564_addr, (char *)dt, 2, false); |
kenjiArai | 0:863510ffa8ff | 137 | rtc_buf[0] = RTC8564_REG_SEC; |
kenjiArai | 0:863510ffa8ff | 138 | _i2c.write((int)RTC8564_addr, (char *)rtc_buf, 8, false); |
kenjiArai | 0:863510ffa8ff | 139 | dt[0] = RTC8564_REG_CONTL1; |
kenjiArai | 0:863510ffa8ff | 140 | dt[1] = 0x00; |
kenjiArai | 0:863510ffa8ff | 141 | _i2c.write((int)RTC8564_addr, (char *)dt, 2, false); |
kenjiArai | 0:863510ffa8ff | 142 | } |
kenjiArai | 0:863510ffa8ff | 143 | |
kenjiArai | 0:863510ffa8ff | 144 | uint8_t RTC8564::bin2bcd (uint8_t dt) |
kenjiArai | 0:863510ffa8ff | 145 | { |
kenjiArai | 0:863510ffa8ff | 146 | uint8_t bcdhigh = 0; |
kenjiArai | 0:863510ffa8ff | 147 | |
kenjiArai | 0:863510ffa8ff | 148 | while (dt >= 10) { |
kenjiArai | 0:863510ffa8ff | 149 | bcdhigh++; |
kenjiArai | 0:863510ffa8ff | 150 | dt -= 10; |
kenjiArai | 0:863510ffa8ff | 151 | } |
kenjiArai | 0:863510ffa8ff | 152 | return ((uint8_t)(bcdhigh << 4) | dt); |
kenjiArai | 0:863510ffa8ff | 153 | } |
kenjiArai | 0:863510ffa8ff | 154 | |
kenjiArai | 0:863510ffa8ff | 155 | uint8_t RTC8564::bcd2bin (uint8_t dt) |
kenjiArai | 0:863510ffa8ff | 156 | { |
kenjiArai | 0:863510ffa8ff | 157 | uint8_t tmp = 0; |
kenjiArai | 0:863510ffa8ff | 158 | |
kenjiArai | 0:863510ffa8ff | 159 | tmp = ((uint8_t)(dt & (uint8_t)0xf0) >> (uint8_t)0x4) * 10; |
kenjiArai | 0:863510ffa8ff | 160 | return (tmp + (dt & (uint8_t)0x0f)); |
kenjiArai | 0:863510ffa8ff | 161 | } |
kenjiArai | 1:d1b58c478a7a | 162 | |
kenjiArai | 1:d1b58c478a7a | 163 |