diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | SConscript | 1 | ||||
| -rw-r--r-- | platforms/stm32/wb.yaml | 5 | ||||
| -rw-r--r-- | rtc/SConscript | 24 | ||||
| -rw-r--r-- | rtc/stm32_rtc.h | 44 |
5 files changed, 75 insertions, 0 deletions
@@ -17,6 +17,7 @@ pwr/pwr.h rcc/flash.h rcc/rcc.h rcc/rcc_enums.h +rtc/rtc.h syscfg/syscfg.h timer/timer.h usb/usb.h @@ -13,6 +13,7 @@ env.Append( env.SConscript('interrupt/SConscript'), env.SConscript('pwr/SConscript'), env.SConscript('rcc/SConscript'), + env.SConscript('rtc/SConscript'), env.SConscript('syscfg/SConscript'), env.SConscript('timer/SConscript'), env.SConscript('uart/SConscript'), diff --git a/platforms/stm32/wb.yaml b/platforms/stm32/wb.yaml index d3590a5..81005f4 100644 --- a/platforms/stm32/wb.yaml +++ b/platforms/stm32/wb.yaml @@ -76,6 +76,11 @@ type: wb offset: 0x58000400 + stm32_rtc: + RTC: + offset: 0x40002800 + backup_count: 20 + stm32_syscfg: SYSCFG: offset: 0x40010000 diff --git a/rtc/SConscript b/rtc/SConscript new file mode 100644 index 0000000..f7956c0 --- /dev/null +++ b/rtc/SConscript @@ -0,0 +1,24 @@ +Import('env') + +headers = [] +instances = [] +sources = [] +aliases = {} + +periph = env['PLATFORM_SPEC'].get('periph', {}) + +if 'stm32_rtc' in periph: + headers.append('stm32_rtc.h') + for name, data in periph['stm32_rtc'].items(): + # Default to version 2, with subseconds, the most common form. + real_type = data.get('type', 'v2ss') + instances.append({ + 'type': 'STM32_RTC_t<STM32_RTC_reg_%s_t>' % real_type, + 'name': name, + 'args': [data['offset']], + }) + +env.Jinja2('rtc.h', '../templates/periph_instances.h.j2', headers = headers, instances = instances, aliases = aliases) + +Return('sources') + diff --git a/rtc/stm32_rtc.h b/rtc/stm32_rtc.h new file mode 100644 index 0000000..bc78128 --- /dev/null +++ b/rtc/stm32_rtc.h @@ -0,0 +1,44 @@ +#pragma once + +#include <mmio/mmio.h> + +struct STM32_RTC_reg_v2ss_t { + volatile uint32_t TR; + volatile uint32_t DR; + volatile uint32_t CR; + volatile uint32_t ISR; + volatile uint32_t PRER; + volatile uint32_t WUTR; + uint32_t _reserved1; + volatile uint32_t ALRMAR; + volatile uint32_t ALRMBR; + volatile uint32_t WPR; + volatile uint32_t SSR; + volatile uint32_t SHIFTR; + volatile uint32_t TSTR; + volatile uint32_t TSDR; + volatile uint32_t TSSSR; + volatile uint32_t CALR; + volatile uint32_t TAMPCR; + volatile uint32_t ALRMASSR; + volatile uint32_t ALRMBSSR; + volatile uint32_t OR; + volatile uint32_t BKP[32]; /* max known 32, might be less, check DS */ +}; + +template <typename T> +class STM32_RTC_t : public mmio_ptr<T> { + public: + using mmio_ptr<T>::ptr; + + void lock(void) const { + ptr()->WPR = 0x99; // Doesn't matter... + } + + void unlock(void) const { + ptr()->WPR = 0xCA; + ptr()->WPR = 0x53; + } + +}; + |