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| author | Gerhard Sittig <gerhard.sittig@gmx.net> | 2020-09-09 18:17:59 +0200 |
|---|---|---|
| committer | Gerhard Sittig <gerhard.sittig@gmx.net> | 2020-09-09 18:21:49 +0200 |
| commit | c7b21bde6ad569b698ad695374335e45b2db6be7 (patch) | |
| tree | 4f94a107210466767713b01f37554db707127c93 /i2c | |
| parent | 455bdc6edec647ef3147eec4291ecf6a0fba74e4 (diff) | |
| download | sigrok-dumps-c7b21bde6ad569b698ad695374335e45b2db6be7.tar.gz sigrok-dumps-c7b21bde6ad569b698ad695374335e45b2db6be7.zip | |
ds3231: add Maxim DS3231 real time clock example captures
Submitted-By: ascuber <gchromestore@gmail.com>
Diffstat (limited to 'i2c')
| -rw-r--r-- | i2c/rtc_dallas_ds3231/README | 48 | ||||
| -rw-r--r-- | i2c/rtc_dallas_ds3231/ds3231_ex1.sr | bin | 0 -> 943 bytes | |||
| -rw-r--r-- | i2c/rtc_dallas_ds3231/ds3231_ex2.sr | bin | 0 -> 676 bytes |
3 files changed, 48 insertions, 0 deletions
diff --git a/i2c/rtc_dallas_ds3231/README b/i2c/rtc_dallas_ds3231/README new file mode 100644 index 0000000..12c783e --- /dev/null +++ b/i2c/rtc_dallas_ds3231/README @@ -0,0 +1,48 @@ +------------------------------------------------------------------------------- +Maxim Integrated DS3231 RTC +------------------------------------------------------------------------------- + +Details: + - DS3231 datasheet: https://datasheets.maximintegrated.com/en/ds/DS3231.pdf + + +Logic analyzer setup +-------------------- + +The logic analyzer used was Geeetech Mini Board Cypress FX2(LP) eval board +with fx2lafw firmware (at 4MHz): + + Probe DS3231 pin + ------------------------- + 0 SCL + 1 SDA + + +ds3231_ex1.sr +---------------------- + +The file provides reading/writing of time keeping registers as well as +control, control/status and temperature registers of the RTC chip, which +was setup to 24-hours mode: + +- Read Control register +- Write Control register - disable alarms +- Read Control/Status register +- Write Control/Status register - clear alarm's flags +- Write Alarm 1 registers - set Alarm 1 at every 1st date +- Write Alarm 2 registers - set Alarm 2 at every minute +- Read date/time +- Read temperature (MSB) + + +ds3231_ex2.sr +---------------------- + +The file provides reading/writing of time keeping registers as well as +control/status and temperature registers of the RTC chip, which was setup +to 24-hours mode and after Alarm 2 occured: + +- Read Control/Status register +- Write Control/Status register - clear alarm flag +- Read date/time +- Read temperature (MSB) diff --git a/i2c/rtc_dallas_ds3231/ds3231_ex1.sr b/i2c/rtc_dallas_ds3231/ds3231_ex1.sr Binary files differnew file mode 100644 index 0000000..4c21d1b --- /dev/null +++ b/i2c/rtc_dallas_ds3231/ds3231_ex1.sr diff --git a/i2c/rtc_dallas_ds3231/ds3231_ex2.sr b/i2c/rtc_dallas_ds3231/ds3231_ex2.sr Binary files differnew file mode 100644 index 0000000..4bcd8db --- /dev/null +++ b/i2c/rtc_dallas_ds3231/ds3231_ex2.sr |