python生成时间戳控制数组
在嵌入式实现时间戳转日期的快速查找
import datetime,time
import os
time_base = datetime.date(1970,1,1)
second_fix = []
for year in range(2010, 2040):
for month in range(1,13):
time_set = datetime.date(year, month, 1)
second_fix.append(int((time_set-time_base).total_seconds()))
print(second_fix)
cnt = len(second_fix)
fd = os.open("arr.c", os.O_RDWR|os.O_CREAT)
ret = os.write(fd, bytes("uint32_t arr[%d]={"%cnt,'UTF-8'))
for index in range(cnt):
if index%12 == 0:
ret = os.write(fd, bytes("\r",'UTF-8'))
target_str = "0x%08X, " % second_fix[index]
os.write(fd, bytes(target_str,'UTF-8'))
ret = os.write(fd, bytes("\r};\r",'UTF-8'))
os.close(fd)
对了 一不小心用的python3.5的环境 2.7的朋友自己适配
以前用过一个很笨的办法、、后面换查表法了
生成的文件加工之后
#define REC_MAX 360
uint32_t month_timestamp_fix[REC_MAX]={
0x4B3D3B00, 0x4B661980, 0x4B8B0380, 0x4BB3E200, 0x4BDB6F00, 0x4C044D80, 0x4C2BDA80, 0x4C54B900, 0x4C7D9780, 0x4CA52480, 0x4CCE0300, 0x4CF59000, //2010
0x4D1E6E80, 0x4D474D00, 0x4D6C3700, 0x4D951580, 0x4DBCA280, 0x4DE58100, 0x4E0D0E00, 0x4E35EC80, 0x4E5ECB00, 0x4E865800, 0x4EAF3680, 0x4ED6C380, //2011
0x4EFFA200, 0x4F288080, 0x4F4EBC00, 0x4F779A80, 0x4F9F2780, 0x4FC80600, 0x4FEF9300, 0x50187180, 0x50415000, 0x5068DD00, 0x5091BB80, 0x50B94880, //2012
0x50E22700, 0x510B0580, 0x512FEF80, 0x5158CE00, 0x51805B00, 0x51A93980, 0x51D0C680, 0x51F9A500, 0x52228380, 0x524A1080, 0x5272EF00, 0x529A7C00, //2013
0x52C35A80, 0x52EC3900, 0x53112300, 0x533A0180, 0x53618E80, 0x538A6D00, 0x53B1FA00, 0x53DAD880, 0x5403B700, 0x542B4400, 0x54542280, 0x547BAF80, //2014
0x54A48E00, 0x54CD6C80, 0x54F25680, 0x551B3500, 0x5542C200, 0x556BA080, 0x55932D80, 0x55BC0C00, 0x55E4EA80, 0x560C7780, 0x56355600, 0x565CE300, //2015
0x5685C180, 0x56AEA000, 0x56D4DB80, 0x56FDBA00, 0x57254700, 0x574E2580, 0x5775B280, 0x579E9100, 0x57C76F80, 0x57EEFC80, 0x5817DB00, 0x583F6800, //2016
0x58684680, 0x58912500, 0x58B60F00, 0x58DEED80, 0x59067A80, 0x592F5900, 0x5956E600, 0x597FC480, 0x59A8A300, 0x59D03000, 0x59F90E80, 0x5A209B80, //2017
0x5A497A00, 0x5A725880, 0x5A974280, 0x5AC02100, 0x5AE7AE00, 0x5B108C80, 0x5B381980, 0x5B60F800, 0x5B89D680, 0x5BB16380, 0x5BDA4200, 0x5C01CF00, //2018
0x5C2AAD80, 0x5C538C00, 0x5C787600, 0x5CA15480, 0x5CC8E180, 0x5CF1C000, 0x5D194D00, 0x5D422B80, 0x5D6B0A00, 0x5D929700, 0x5DBB7580, 0x5DE30280, //2019
0x5E0BE100, 0x5E34BF80, 0x5E5AFB00, 0x5E83D980, 0x5EAB6680, 0x5ED44500, 0x5EFBD200, 0x5F24B080, 0x5F4D8F00, 0x5F751C00, 0x5F9DFA80, 0x5FC58780, //2020
0x5FEE6600, 0x60174480, 0x603C2E80, 0x60650D00, 0x608C9A00, 0x60B57880, 0x60DD0580, 0x6105E400, 0x612EC280, 0x61564F80, 0x617F2E00, 0x61A6BB00, //2021
0x61CF9980, 0x61F87800, 0x621D6200, 0x62464080, 0x626DCD80, 0x6296AC00, 0x62BE3900, 0x62E71780, 0x630FF600, 0x63378300, 0x63606180, 0x6387EE80, //2022
0x63B0CD00, 0x63D9AB80, 0x63FE9580, 0x64277400, 0x644F0100, 0x6477DF80, 0x649F6C80, 0x64C84B00, 0x64F12980, 0x6518B680, 0x65419500, 0x65692200, //2023
0x65920080, 0x65BADF00, 0x65E11A80, 0x6609F900, 0x66318600, 0x665A6480, 0x6681F180, 0x66AAD000, 0x66D3AE80, 0x66FB3B80, 0x67241A00, 0x674BA700, //2024
0x67748580, 0x679D6400, 0x67C24E00, 0x67EB2C80, 0x6812B980, 0x683B9800, 0x68632500, 0x688C0380, 0x68B4E200, 0x68DC6F00, 0x69054D80, 0x692CDA80, //2025
0x6955B900, 0x697E9780, 0x69A38180, 0x69CC6000, 0x69F3ED00, 0x6A1CCB80, 0x6A445880, 0x6A6D3700, 0x6A961580, 0x6ABDA280, 0x6AE68100, 0x6B0E0E00, //2026
0x6B36EC80, 0x6B5FCB00, 0x6B84B500, 0x6BAD9380, 0x6BD52080, 0x6BFDFF00, 0x6C258C00, 0x6C4E6A80, 0x6C774900, 0x6C9ED600, 0x6CC7B480, 0x6CEF4180, //2027
0x6D182000, 0x6D40FE80, 0x6D673A00, 0x6D901880, 0x6DB7A580, 0x6DE08400, 0x6E081100, 0x6E30EF80, 0x6E59CE00, 0x6E815B00, 0x6EAA3980, 0x6ED1C680, //2028
0x6EFAA500, 0x6F238380, 0x6F486D80, 0x6F714C00, 0x6F98D900, 0x6FC1B780, 0x6FE94480, 0x70122300, 0x703B0180, 0x70628E80, 0x708B6D00, 0x70B2FA00, //2029
0x70DBD880, 0x7104B700, 0x7129A100, 0x71527F80, 0x717A0C80, 0x71A2EB00, 0x71CA7800, 0x71F35680, 0x721C3500, 0x7243C200, 0x726CA080, 0x72942D80, //2030
0x72BD0C00, 0x72E5EA80, 0x730AD480, 0x7333B300, 0x735B4000, 0x73841E80, 0x73ABAB80, 0x73D48A00, 0x73FD6880, 0x7424F580, 0x744DD400, 0x74756100, //2031
0x749E3F80, 0x74C71E00, 0x74ED5980, 0x75163800, 0x753DC500, 0x7566A380, 0x758E3080, 0x75B70F00, 0x75DFED80, 0x76077A80, 0x76305900, 0x7657E600, //2032
0x7680C480, 0x76A9A300, 0x76CE8D00, 0x76F76B80, 0x771EF880, 0x7747D700, 0x776F6400, 0x77984280, 0x77C12100, 0x77E8AE00, 0x78118C80, 0x78391980, //2033
0x7861F800, 0x788AD680, 0x78AFC080, 0x78D89F00, 0x79002C00, 0x79290A80, 0x79509780, 0x79797600, 0x79A25480, 0x79C9E180, 0x79F2C000, 0x7A1A4D00, //2034
0x7A432B80, 0x7A6C0A00, 0x7A90F400, 0x7AB9D280, 0x7AE15F80, 0x7B0A3E00, 0x7B31CB00, 0x7B5AA980, 0x7B838800, 0x7BAB1500, 0x7BD3F380, 0x7BFB8080, //2035
0x7C245F00, 0x7C4D3D80, 0x7C737900, 0x7C9C5780, 0x7CC3E480, 0x7CECC300, 0x7D145000, 0x7D3D2E80, 0x7D660D00, 0x7D8D9A00, 0x7DB67880, 0x7DDE0580, //2036
0x7E06E400, 0x7E2FC280, 0x7E54AC80, 0x7E7D8B00, 0x7EA51800, 0x7ECDF680, 0x7EF58380, 0x7F1E6200, 0x7F474080, 0x7F6ECD80, 0x7F97AC00, 0x7FBF3900, //2037
0x7FE81780, 0x8010F600, 0x8035E000, 0x805EBE80, 0x80864B80, 0x80AF2A00, 0x80D6B700, 0x80FF9580, 0x81287400, 0x81500100, 0x8178DF80, 0x81A06C80, //2038
0x81C94B00, 0x81F22980, 0x82171380, 0x823FF200, 0x82677F00, 0x82905D80, 0x82B7EA80, 0x82E0C900, 0x8309A780, 0x83313480, 0x835A1300, 0x8381A000, //2039
};
static uint32_t get_index(uint32_t stamp, const uint32_t* src, uint32_t size)
{
uint32_t index_start = 0;
uint32_t index_end = size - 1;
uint32_t result = 0;
for(int i= 0;i<10;i++){
if(stamp < src[index_start+1]){
result = index_start;
break;
}else if(stamp > src[index_end]){
result = index_end;
break;
}else{
uint32_t index_mid = (index_start+index_end)/2;
if(stamp >= src[index_mid]){
index_start = index_mid;
continue;
}else{
index_end = index_mid;
continue;
}
}
}
if(i == 10){
APP_ERROR_CHECK(1);
}
return result;
}
然后附上使用方式
typedef struct{
uint16_t year; //direct year
uint8_t month;
uint8_t day; //day begin with 1 not 0
uint8_t hour;
uint8_t minute;
uint8_t second;
}clock_t;
typedef enum {
week_mon = 0,
week_tues,
week_wed,
week_thur,
week_fri,
week_sat,
week_sun,
} week_t;
#define STAMP_TABLE_YEAR_START 2010
void stamp_to_clock(const timestamp_t timestamp, clock_t* p_clock_out)
{
uint32_t start_index = get_index(timestamp, month_timestamp_fix, REC_MAX);
timestamp_t tmp_stamp = timestamp - month_timestamp_fix[start_index];
p_clock_out->year = start_index / 12 + STAMP_TABLE_YEAR_START;
p_clock_out->month = start_index % 12;
p_clock_out->day = tmp_stamp / 86400 + 1;
p_clock_out->hour = (tmp_stamp % 86400) / 3600;
p_clock_out->minute = (tmp_stamp / 60) % 60;
p_clock_out->second = tmp_stamp % 60;
}
void clock_to_stamp(const clock_t* p_clock_in, timestamp_t* timestamp_out)
{
if((p_clock_in->year <= 2010)
||(p_clock_in->year >= 2040)){
APP_ERROR_CHECK(2);
return;
}
uint32_t timestamp = month_timestamp_fix[((p_clock_in->year - STAMP_TABLE_YEAR_START) * 12) + p_clock_in->month];
timestamp += (p_clock_in->day - 1) * 86400;
timestamp += p_clock_in->hour * 3600;
timestamp += p_clock_in->minute * 60;
timestamp += p_clock_in->second;
*timestamp_out = timestamp;
}
week_t week_now_get(void)
{
const week_t the_day_1970_1_1 = week_thur;
uint32_t day_past_now = timestamp_now / 86400;
week_t week_now = (week_t)((day_past_now + the_day_1970_1_1) % 7);
return week_now;
}
为了省ROM 查表只映射了2010到2040年
import datetime
import os
time_base = datetime.date(1970,1,1)
second_fix = []
for year in range(2010, 2040):
for month in range(1,13):
time_set = datetime.date(year, month, 1)
second_fix.append(int((time_set-time_base).total_seconds()))
print(second_fix)
cnt = len(second_fix)
fd = os.open("arr.c", os.O_RDWR|os.O_CREAT)
#ret = os.write(fd, bytes("uint32_t arr[%d]={"%cnt,'UTF-8'))
ret = os.write(fd, "uint32_t arr[%d]={");
for index in range(cnt):
if index%12 == 0:
#ret = os.write(fd, bytes("\r",'UTF-8'))
ret = os.write(fd, "\r")
target_str = "0x%08X, " % second_fix[index]
#os.write(fd, bytes(target_str,'UTF-8'))
os.write(fd, target_str)
#ret = os.write(fd, bytes("\r};\r",'UTF-8'))
ret = os.write(fd, "\r};\r")
os.close(fd)
补充py2.7的版本