Re: STM32 a nastavení lock-bitu pres OpenOCD

[Andrej Jancura]

Tak mi to nedalo tiez a pozrel som to na 17´´... Hadajte co vyslo... :)))

2014-11-05 20:41 GMT+01:00 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:

>  Asi nejaka starsi verze LCD s malym rozlisenim ;-) sry, nedalo mi to ;-)
> A proc by to melo byt ujete? Pripada mi to prehledne, delsi zapis IMHO
> nijak nevadi. Je to navic inicializace 2 DMA kanalu + jednoho preruseni,
> jak jsem to namatkou vykopiroval ze zdrojaku.
>
>
> Dne 5. 11. 2014 20:36, Andrej Jancura napsal(a):
>
>  No nech to je logicke ako chce, ja ten kod na svojom netbooku vidim na
> troch obrazovkach... Nieco podobne ako doobeda prepinanie hodin.
>
>  Nezda sa Vam to trochu uletene?!
>
>  A.
>
> 2014-11-05 20:22 GMT+01:00 Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:
>
>> Mozna, no, ale kdyz pouziju tu funkci, nemusim to resit ;-)
>> Me prece jen napr. takovyto zapis prijde dost prehledny a elegantni, po
>> prekladu a optimalizaci to neni ani nejak neefektivni.>
>>
>>     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
>>
>>     DMA_InitTypeDef DMA_InitStructure;
>>
>>     DMA_StructInit(&DMA_InitStructure);
>>     /* USART1_Rx_DMA_Channel (triggered by USART1 Rx event) Config */
>>     DMA_DeInit(DMA1_Channel5);
>>     DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(USART1->DR);
>>     //USART1 DR
>>     DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)mstRcvBuf;
>>     DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
>>     DMA_InitStructure.DMA_BufferSize = MSTRCVBUFLEN;
>>     DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
>>     DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
>>     DMA_InitStructure.DMA_PeripheralDataSize =
>> DMA_PeripheralDataSize_Byte;
>>     DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
>>     DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
>>     DMA_InitStructure.DMA_Priority = DMA_Priority_High;
>>     DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
>>     DMA_Init(DMA1_Channel5, &DMA_InitStructure);
>>
>>
>>     DMA_StructInit(&DMA_InitStructure);
>>     /* USART1_Tx_DMA_Channel (triggered by USART1 Tx event) Config */
>>     DMA_DeInit(DMA1_Channel4);
>>     DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(USART1->DR);
>>     //USART1 DR
>>     DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)bufTxMaster;
>>     DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
>>     DMA_InitStructure.DMA_BufferSize = 1;
>>     DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
>>     DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
>>     DMA_InitStructure.DMA_PeripheralDataSize =
>> DMA_PeripheralDataSize_Byte;
>>     DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
>>     DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
>>     DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
>>     DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
>>     DMA_Init(DMA1_Channel4, &DMA_InitStructure);
>>
>>
>>     NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel5_IRQn;
>>     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 14;
>>     NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
>>     NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
>>     NVIC_Init(&NVIC_InitStructure);
>>
>>     DMA_ITConfig(DMA1_Channel5, DMA_IT_HT| DMA_IT_TC, ENABLE);
>>
>>      /* Enable USART1 DMA RX request */
>>     USART_DMACmd(USART1, USART_DMAReq_Rx, ENABLE);
>>     /* Enable USART1 DMA TX request */
>>     USART_DMACmd(USART1, USART_DMAReq_Tx, ENABLE);
>>
>>     DMA_Cmd(DMA1_Channel5, ENABLE);
>>
>>
>>
>>
>> Dne 5. 11. 2014 19:53, Jan Waclawek napsal(a):
>>
>>  Treba inicializace DMA je podstatne jednodussi naplnenim cca 15 polozek
>>>> struktury dle nejakeho vzoroveho prikladu a pouzitim funkce ...Init, nez
>>>> hledanim jake registry jak nastavit a v jakem poradi...
>>>>
>>> Zhodou okolnosti su to len 4 registre - zdojova adresa, cielova adresa,
>>> pocet prenasanych poloziek a riadiaci register (plus treba vynulovat
>>> status bity, t.j. spolu s tym je to 5) a v lubovolnom poradi, kym sa to
>>> DMA nepovoli (tj najjednoduchsie je zapisovat do kontrolneho nakoniec,
>>> inak je to jedno).
>>>
>>> S pozitim symbolov z stm32xxxx.h je to aj prehladne (akurat si treba
>>> dopisat definicie poloziek pre bitove polia, KTORE BY SOM AJ NA TOMTO
>>> MIESTE RAD POPROSIL OD PRITOMNYCH Z ST, ABY ICH DOPLNILI), napr.
>>> www.efton.sk/STM32/bt.c spolu s www.efton.sk/STM32/stm32f4xx.h.zip
>>>
>>> wek
>>>
>>>
>>> _______________________________________________
>>> HW-list mailing list  -  sponsored by www.HW.cz
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>>
>>
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>
>
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