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update

This commit is contained in:
olikraus 2017-04-14 12:28:38 +02:00
parent 2dd787f028
commit 43311096b6
3 changed files with 44 additions and 3 deletions
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7
sys/arm/stm32l031x6/info.txt
View File

@ -96,4 +96,9 @@ stm32flash: There seems to be a problem with ch340/ch341 devices
ok, i will be using a cp21xx driver here...
Conclution: Support of CH340 usb-serial converter for ubuntu linux will be there with Ubunutz 17.04
===========
steampunk
http://www.rattlebrained.org/articles/diy-pvc-train-whistle

2
sys/arm/stm32l031x6/u8g2_rtc/Makefile
View File

@ -117,7 +117,7 @@ all: $(DISNAME) $(HEXNAME)
.PHONY: upload
upload: $(DISNAME) $(HEXNAME) $(ELFNAME)
stm32flash -e 255 -g 0 -w $(HEXNAME) -v /dev/ttyUSB0
stm32flash -b 115200 -e 255 -g 0 -w $(HEXNAME) -v /dev/ttyUSB0
$(SIZE) $(ELFNAME)
.PHONY: clean

38
sys/arm/stm32l031x6/u8g2_rtc/main.c
View File

@ -1,4 +1,13 @@
/* LED blink project for the STM32L031 */
/*
RTC for the STM32L031
EXTI line
17 RTC alarm
19 RTC tamper & timestamp & CSS_LSE
20 RTC wakeup timer
*/
#include "stm32l031xx.h"
#include "delay.h"
@ -14,6 +23,7 @@ uint8_t u8x8_gpio_and_delay_stm32l0(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int,
/* global variables */
volatile unsigned long SysTickCount = 0;
volatile unsigned long RTCIRQCount = 0;
rtc_t rtc;
u8g2_t u8g2;
@ -24,6 +34,11 @@ void __attribute__ ((interrupt, used)) SysTick_Handler(void)
SysTickCount++;
}
void __attribute__ ((interrupt, used)) RTC_IRQHandler(void)
{
RTC->ISR &= ~RTC_ISR_WUTF; /* clear the wake up flag... is this required? */
RTCIRQCount++;
}
void setHSIClock()
@ -157,6 +172,7 @@ int main()
RTC->WPR = 0x0ca; /* disable RTC write protection */
RTC->WPR = 0x053;
/* RTC Start */
RTC->ISR = RTC_ISR_INIT; /* request RTC stop */
while((RTC->ISR & RTC_ISR_INITF)!=RTC_ISR_INITF) /* wait for stop */
;
@ -164,10 +180,26 @@ int main()
RTC->TR = 0;
RTC->ISR =~ RTC_ISR_INIT; /* start RTC */
/* wake up time setup & start */
RTC->CR &=~ RTC_CR_WUTE; /* disable wakeup timer for reprogramming */
while((RTC->ISR & RTC_ISR_WUTWF) != RTC_ISR_WUTWF)
;
RTC->WUTR = 0x010; /* reload is 1: 1Hz with the 1Hz clock */
RTC->CR &= ~RTC_CR_WUCKSEL; /* clear selection register */
RTC->CR |= RTC_CR_WUCKSEL_2; /* select the 1Hz clock */
RTC->CR |= RTC_CR_WUTE | RTC_CR_WUTIE ;
RTC->ISR &= ~RTC_ISR_WUTF; /* clear the wake up flag... is this required? */
RTC->WPR = 0; /* enable RTC write protection */
RTC->WPR = 0;
EXTI->IMR |= EXTI_IMR_IM20;
EXTI->RTSR |= EXTI_RTSR_RT20;
NVIC_EnableIRQ(RTC_IRQn);
NVIC_SetPriority(RTC_IRQn, 0);
//PWR->CR &= ~PWR_CR_DBP; /* disable write access to RCC->CSR */
@ -186,6 +218,10 @@ int main()
u8g2_DrawStr(&u8g2, 0, 50, "+");
else
u8g2_DrawStr(&u8g2, 0, 50, "-");
u8g2_DrawStr(&u8g2, 40,50, u8x8_u8toa(RTCIRQCount, 3));
u8g2_SendBuffer(&u8g2);
delay_micro_seconds(50000);