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codewarrior使用指南-閱讀頁

2024-08-23 22:23本頁面
  

【正文】 e169。FreescaleInc.常數(shù)段想存放在特定的位置60TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.存放在數(shù)組里的 常數(shù)并沒有放在ROM中,而是直接調(diào)用了它的內(nèi)容。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.利用向?qū)?chuàng)建一個(gè)新工程項(xiàng)目?編譯?啟動(dòng)程序?如何對 IO及寄存器進(jìn)行操作?如何使用匯編和 C語言混合編程?如何使用 ProcessorandFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022. define*volatilechar)0x0000 volatile unsigned char PortA 0x0000。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.?練習(xí):在某個(gè)項(xiàng)目中需要將絕對地址 0xFFA處整型變量的值設(shè)為 0xAA55(編譯器為純粹的 ANSI編譯器)。*ptr(int*ptr0xAA55。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.AssemblyInstuction。(AssemblyInstruction)。{}67TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.修改 CPU中 CCR寄存器的 I位68TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.利用匯編指令來修改 I 位69TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.位域? 位結(jié)構(gòu)167。 不同的編譯器不能移植。 無法移植167。 可移植,合理提高效率167。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.71TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.聯(lián)合體提供一種可以對單一存聯(lián)合體提供一種可以對單一存貯區(qū)不同類型數(shù)據(jù)操作的方法貯區(qū)不同類型數(shù)據(jù)操作的方法,程序中沒有嵌入任何依賴于,程序中沒有嵌入任何依賴于機(jī)器的信息機(jī)器的信息只有 PS位被修改單指令寫操作72Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.TM?在新項(xiàng)目中加入或刪除文件?調(diào)試?PRM文件設(shè)置?如何寫中斷程序?嵌入式編程注意事項(xiàng)?ExpertTM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.CodeWarriorNumber VectorAddress–––n*2–數(shù)據(jù)手冊? 在 源文件中,中斷服務(wù)程序前面加 time_counter。7{time_counter}方法 1: 利用關(guān)鍵字 ‘interrupt’:74TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.中斷向量表分配 – MCU 數(shù)據(jù)手冊75TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.方法 2:在 PRM文件中聲明在 PRM文件中聲明? 在 C代碼中寫中斷服務(wù)程序pragma TRAP_PROCvoid INCcount(void) { int card1。}在 PRM 文件中,將中斷服務(wù)程序名和中斷向量地址對應(yīng)VECTOR ADDRESS 0xFFF0 INCcount76TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.方法 3:在向量表中初始化在 C語言文件中的常量表中初始化 :? 在 C代碼中定義 pragma CONST_SEG VectorTable void (*const procTable[])(void) = { intFunc1, intFunc2, intFunc3}pragma CONST_SEG DEFAULT在 PRM文件中分配 PLACEMENT VectorTable INTO READ_ONLY 0xFFFA TO 0xFFFF。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.利用向?qū)?chuàng)建一個(gè)新工程項(xiàng)目?編譯?啟動(dòng)程序?如何對 IO及寄存器進(jìn)行操作?如何使用匯編和 C語言混合編程?如何使用 ProcessorandFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.(ElfDwarfHIWARE).? 接口模塊 (C/Assembly)(Assembly/C)andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.extern const int ASMConst。 CData = ASMData + ASMConst + 3。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.const unsigned int CConst。XREF CConst。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.在 C中調(diào)用匯編函數(shù) AddVar(Cdata, 10)。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.}函數(shù)聲明 (匯編 ) XREF AddVar在匯編中調(diào)用 C函數(shù) LDD CData 。 PUSH D on the stack LDAB 10 。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.利用向?qū)?chuàng)建一個(gè)新工程項(xiàng)目?編譯?啟動(dòng)程序?如何對 IO及寄存器進(jìn)行操作?如何使用匯編和 C語言混合編程?如何使用 ProcessorandFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.在選擇數(shù)據(jù)類型時(shí),有 3條原則 : 在表達(dá)式內(nèi)聲明數(shù)據(jù)類型,以便將數(shù)據(jù)類型減小到最小(強(qiáng)制類型轉(zhuǎn)換)q 使用 typedefs得到固定的大小 根據(jù)編譯器和系統(tǒng)而改變 移植到不同的機(jī)器代碼不變 當(dāng)值需要固定位時(shí)使用91TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.定義完整的數(shù)據(jù)類型在 main函數(shù)里聲明了 3種不同數(shù)據(jù)類型的變量92TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.僅最后面的位寫入值 。andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.andFreescaleareofSemiconductor,Allproductservicearepropertytheirowners.Semiconductor,2022.96TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.在這種情況下,編譯器為所有變量保留了內(nèi)存 97TM Freescale?thelogotrademarksFreescaleInc.otherornamestheofrespective169。FreescaleInc.變量聲明的內(nèi)存區(qū),每個(gè)變量有不同的大?。? 2和 4字節(jié))根據(jù)變量大小的不同,每個(gè)加操作用不同的方法完成 98TM Freescale?thelogotrademarksFreescaleInc.ot
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