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STM32
STM32CAN常用波特率配置,从此不再为计算那该死的BS1,BS2而烦恼。
2019-07-20 23:08
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48条回答
MIFANHTS
1楼-- · 2019-07-25 17:54
一直想找的。谢谢、
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STM32YZ
2楼-- · 2019-07-25 19:30
STM32YZ 发表于 2016-11-29 08:26
谢谢楼主分享
谢谢支持。
加载中...
stm32tag
3楼-- · 2019-07-25 19:56
[mw_shl_code=applescript,true]switch (iBaud)
{
case CAN_BAUD_5K: /* BAUD = 5kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq; /* 时间段1 */
// TS1[3:0]，定义时间段1占用了多少个时间单元
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq; /* 时间段2 */
// TS2[2:0]，定义时间段2占用了多少个时间单元
CAN_InitStructure.CAN_Prescaler = 450; /* 波特率预分频 F/(BS1+BS2+1)/PRE */
break;
case CAN_BAUD_10K: /* BAUD = 10kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 225;
break;
case CAN_BAUD_20K: /* BAUD = 20kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 150;
break;
case CAN_BAUD_25K: /* BAUD = 25kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 90;
break;
case CAN_BAUD_30K: /* BAUD = 30kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 75;
break;
case CAN_BAUD_40K: /* BAUD = 40kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 75;
break;
case CAN_BAUD_50K: /* BAUD = 50kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
case CAN_BAUD_60K: /* BAUD = 60kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 50;
break;
case CAN_BAUD_80K: /* BAUD = 80kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
case CAN_BAUD_90K: /* BAUD = 90kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 40;
break;
case CAN_BAUD_100K: /* BAUD = 100kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 30;
break;
case CAN_BAUD_200K: /* BAUD = 200kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 15;
break;
case CAN_BAUD_300K: /* BAUD = 300kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 10;
break;
case CAN_BAUD_400K: /* BAUD = 400kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 9;
break;
case CAN_BAUD_500K: /* BAUD = 500kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_3tq;
CAN_InitStructure.CAN_Prescaler = 9;
break;
case CAN_BAUD_600K: /* BAUD = 600kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 5;
break;
case CAN_BAUD_800K: /* BAUD = 800kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 5;
break;
case CAN_BAUD_900K: /* BAUD = 900kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 4;
break;
case CAN_BAUD_1000K: /* BAUD = 1000kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 3;
break;
default: /* BAUD = 50kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
}[/mw_shl_code]
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a4615800
4楼-- · 2019-07-26 01:37
精彩回答 2 元偷偷看……
加载中...
MIFANHTS
5楼-- · 2019-07-26 03:13
精彩回答 2 元偷偷看……
加载中...
stm32tag
6楼-- · 2019-07-26 06:32
好东西！
加载中...
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谢谢支持。
{
case CAN_BAUD_5K: /* BAUD = 5kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq; /* 时间段1 */
// TS1[3:0]，定义时间段1占用了多少个时间单元
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq; /* 时间段2 */
// TS2[2:0]，定义时间段2占用了多少个时间单元
CAN_InitStructure.CAN_Prescaler = 450; /* 波特率预分频 F/(BS1+BS2+1)/PRE */
break;
case CAN_BAUD_10K: /* BAUD = 10kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 225;
break;
case CAN_BAUD_20K: /* BAUD = 20kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 150;
break;
case CAN_BAUD_25K: /* BAUD = 25kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 90;
break;
case CAN_BAUD_30K: /* BAUD = 30kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 75;
break;
case CAN_BAUD_40K: /* BAUD = 40kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 75;
break;
case CAN_BAUD_50K: /* BAUD = 50kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
case CAN_BAUD_60K: /* BAUD = 60kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 50;
break;
case CAN_BAUD_80K: /* BAUD = 80kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
case CAN_BAUD_90K: /* BAUD = 90kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 40;
break;
case CAN_BAUD_100K: /* BAUD = 100kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 30;
break;
case CAN_BAUD_200K: /* BAUD = 200kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 15;
break;
case CAN_BAUD_300K: /* BAUD = 300kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 10;
break;
case CAN_BAUD_400K: /* BAUD = 400kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 9;
break;
case CAN_BAUD_500K: /* BAUD = 500kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_3tq;
CAN_InitStructure.CAN_Prescaler = 9;
break;
case CAN_BAUD_600K: /* BAUD = 600kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 5;
break;
case CAN_BAUD_800K: /* BAUD = 800kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 5;
break;
case CAN_BAUD_900K: /* BAUD = 900kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;
CAN_InitStructure.CAN_Prescaler = 4;
break;
case CAN_BAUD_1000K: /* BAUD = 1000kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 3;
break;
default: /* BAUD = 50kbps */
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler = 45;
break;
}[/mw_shl_code]
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