📄 stm32f10x_usart.lst
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140
141 /*---------------------------- USART CR2 Configuration -----------------------*/
142 tmpreg = USARTx->CR2;
\ 00000018 208A LDRH R0,[R4, #+16]
\ 0000001A 0700 MOVS R7,R0
143 /* Clear STOP[13:12], CLKEN, CPOL, CPHA and LBCL bits */
144 tmpreg &= CR2_CLEAR_Mask;
\ 0000001C 3800 MOVS R0,R7
\ 0000001E 2C4F LDR.N R7,??USART_Init_0 ;; 0xc0ff
\ 00000020 0740 ANDS R7,R7,R0
145
146 /* Configure the USART Stop Bits, Clock, CPOL, CPHA and LastBit ------------*/
147 /* Set STOP[13:12] bits according to USART_Mode value */
148 /* Set CPOL bit according to USART_CPOL value */
149 /* Set CPHA bit according to USART_CPHA value */
150 /* Set LBCL bit according to USART_LastBit value */
151 tmpreg |= (u32)USART_InitStruct->USART_StopBits | USART_InitStruct->USART_Clock |
152 USART_InitStruct->USART_CPOL | USART_InitStruct->USART_CPHA |
153 USART_InitStruct->USART_LastBit;
\ 00000022 E888 LDRH R0,[R5, #+6]
\ 00000024 E989 LDRH R1,[R5, #+14]
\ 00000026 0143 ORRS R1,R1,R0
\ 00000028 288A LDRH R0,[R5, #+16]
\ 0000002A 0843 ORRS R0,R0,R1
\ 0000002C 698A LDRH R1,[R5, #+18]
\ 0000002E 0143 ORRS R1,R1,R0
\ 00000030 A88A LDRH R0,[R5, #+20]
\ 00000032 0843 ORRS R0,R0,R1
\ 00000034 3843 ORRS R0,R0,R7
\ 00000036 0700 MOVS R7,R0
154
155 /* Write to USART CR2 */
156 USARTx->CR2 = (u16)tmpreg;
\ 00000038 3800 MOVS R0,R7
\ 0000003A 2082 STRH R0,[R4, #+16]
157
158 /*---------------------------- USART CR1 Configuration -----------------------*/
159 tmpreg = 0x00;
\ 0000003C 0020 MOVS R0,#+0
\ 0000003E 0700 MOVS R7,R0
160 tmpreg = USARTx->CR1;
\ 00000040 A089 LDRH R0,[R4, #+12]
\ 00000042 0700 MOVS R7,R0
161 /* Clear M, PCE, PS, TE and RE bits */
162 tmpreg &= CR1_CLEAR_Mask;
\ 00000044 3800 MOVS R0,R7
\ 00000046 234F LDR.N R7,??USART_Init_0+0x4 ;; 0xe9f3
\ 00000048 0740 ANDS R7,R7,R0
163
164 /* Configure the USART Word Length, Parity and mode ----------------------- */
165 /* Set the M bits according to USART_WordLength value */
166 /* Set PCE and PS bits according to USART_Parity value */
167 /* Set TE and RE bits according to USART_Mode value */
168 tmpreg |= (u32)USART_InitStruct->USART_WordLength | USART_InitStruct->USART_Parity |
169 USART_InitStruct->USART_Mode;
\ 0000004A A888 LDRH R0,[R5, #+4]
\ 0000004C 2989 LDRH R1,[R5, #+8]
\ 0000004E 0143 ORRS R1,R1,R0
\ 00000050 A889 LDRH R0,[R5, #+12]
\ 00000052 0843 ORRS R0,R0,R1
\ 00000054 3843 ORRS R0,R0,R7
\ 00000056 0700 MOVS R7,R0
170
171 /* Write to USART CR1 */
172 USARTx->CR1 = (u16)tmpreg;
\ 00000058 3800 MOVS R0,R7
\ 0000005A A081 STRH R0,[R4, #+12]
173
174 /*---------------------------- USART CR3 Configuration -----------------------*/
175 tmpreg = 0x00;
\ 0000005C 0020 MOVS R0,#+0
\ 0000005E 0700 MOVS R7,R0
176 tmpreg = USARTx->CR3;
\ 00000060 A08A LDRH R0,[R4, #+20]
\ 00000062 0700 MOVS R7,R0
177 /* Clear CTSE and RTSE bits */
178 tmpreg &= CR3_CLEAR_Mask;
\ 00000064 3800 MOVS R0,R7
\ 00000066 1C4F LDR.N R7,??USART_Init_0+0x8 ;; 0xfcff
\ 00000068 0740 ANDS R7,R7,R0
179
180 /* Configure the USART HFC -------------------------------------------------*/
181 /* Set CTSE and RTSE bits according to USART_HardwareFlowControl value */
182 tmpreg |= USART_InitStruct->USART_HardwareFlowControl;
\ 0000006A 3800 MOVS R0,R7
\ 0000006C 6F89 LDRH R7,[R5, #+10]
\ 0000006E 0743 ORRS R7,R7,R0
183
184 /* Write to USART CR3 */
185 USARTx->CR3 = (u16)tmpreg;
\ 00000070 3800 MOVS R0,R7
\ 00000072 A082 STRH R0,[R4, #+20]
186
187 /*---------------------------- USART BRR Configuration -----------------------*/
188 tmpreg = 0x00;
\ 00000074 0020 MOVS R0,#+0
\ 00000076 0700 MOVS R7,R0
189
190 /* Configure the USART Baud Rate -------------------------------------------*/
191 RCC_GetClocksFreq(&RCC_ClocksStatus);
\ 00000078 02A8 ADD R0,SP,#+8
\ 0000007A ........ BL RCC_GetClocksFreq
192 if ((*(u32*)&USARTx) == USART1_BASE)
\ 0000007E 1748 LDR.N R0,??USART_Init_0+0xC ;; 0x40013800
\ 00000080 8442 CMP R4,R0
\ 00000082 02D1 BNE.N ??USART_Init_1
193 {
194 apbclock = RCC_ClocksStatus.PCLK2_Frequency;
\ 00000084 0598 LDR R0,[SP, #+20]
\ 00000086 0090 STR R0,[SP, #+0]
\ 00000088 01E0 B.N ??USART_Init_2
195 }
196 else
197 {
198 apbclock = RCC_ClocksStatus.PCLK1_Frequency;
\ ??USART_Init_1:
\ 0000008A 0498 LDR R0,[SP, #+16]
\ 0000008C 0090 STR R0,[SP, #+0]
199 }
200
201 /* Determine the integer part */
202 integerdivider = ((0x19 * apbclock) / (0x04 * (USART_InitStruct->USART_BaudRate)));
\ ??USART_Init_2:
\ 0000008E 0098 LDR R0,[SP, #+0]
\ 00000090 1921 MOVS R1,#+25
\ 00000092 4843 MULS R0,R1,R0
\ 00000094 2968 LDR R1,[R5, #+0]
\ 00000096 0422 MOVS R2,#+4
\ 00000098 5143 MULS R1,R2,R1
\ 0000009A B0FBF1F6 UDIV R6,R0,R1
203 tmpreg = (integerdivider / 0x64) << 0x04;
\ 0000009E 6420 MOVS R0,#+100
\ 000000A0 B6FBF0F0 UDIV R0,R6,R0
\ 000000A4 0701 LSLS R7,R0,#+4
204
205 /* Determine the fractional part */
206 fractionaldivider = integerdivider - (0x64 * (tmpreg >> 0x04));
\ 000000A6 3809 LSRS R0,R7,#+4
\ 000000A8 6421 MOVS R1,#+100
\ 000000AA 00FB1160 MLS R0,R0,R1,R6
\ 000000AE 0190 STR R0,[SP, #+4]
207 tmpreg |= ((((fractionaldivider * 0x10) + 0x32) / 0x64)) & ((u8)0x0F);
\ 000000B0 0198 LDR R0,[SP, #+4]
\ 000000B2 1021 MOVS R1,#+16
\ 000000B4 4843 MULS R0,R1,R0
\ 000000B6 3230 ADDS R0,R0,#+50
\ 000000B8 6421 MOVS R1,#+100
\ 000000BA B0FBF1F0 UDIV R0,R0,R1
\ 000000BE 0007 LSLS R0,R0,#+28 ;; ZeroExtS R0,R0,#+28,#+28
\ 000000C0 000F LSRS R0,R0,#+28
\ 000000C2 3843 ORRS R0,R0,R7
\ 000000C4 0700 MOVS R7,R0
208
209 /* Write to USART BRR */
210 USARTx->BRR = (u16)tmpreg;
\ 000000C6 3800 MOVS R0,R7
\ 000000C8 2081 STRH R0,[R4, #+8]
211 }
\ 000000CA 07B0 ADD SP,SP,#+28
\ 000000CC F0BD POP {R4-R7,PC} ;; return
\ 000000CE 00BF Nop
\ ??USART_Init_0:
\ 000000D0 FFC00000 DC32 0xc0ff
\ 000000D4 F3E90000 DC32 0xe9f3
\ 000000D8 FFFC0000 DC32 0xfcff
\ 000000DC 00380140 DC32 0x40013800
212
213 /*******************************************************************************
214 * Function Name : USART_StructInit
215 * Description : Fills each USART_InitStruct member with its default value.
216 * Input : - USART_InitStruct: pointer to a USART_InitTypeDef structure
217 * which will be initialized.
218 * Output : None
219 * Return : None
220 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
221 void USART_StructInit(USART_InitTypeDef* USART_InitStruct)
222 {
223 /* USART_InitStruct members default value */
224 USART_InitStruct->USART_BaudRate = 0x2580; /* 9600 Baud */
\ USART_StructInit:
\ 00000000 5FF41651 MOVS R1,#+9600
\ 00000004 0160 STR R1,[R0, #+0]
225 USART_InitStruct->USART_WordLength = USART_WordLength_8b;
\ 00000006 0021 MOVS R1,#+0
\ 00000008 8180 STRH R1,[R0, #+4]
226 USART_InitStruct->USART_StopBits = USART_StopBits_1;
\ 0000000A 0021 MOVS R1,#+0
\ 0000000C C180 STRH R1,[R0, #+6]
227 USART_InitStruct->USART_Parity = USART_Parity_No ;
\ 0000000E 0021 MOVS R1,#+0
\ 00000010 0181 STRH R1,[R0, #+8]
228 USART_InitStruct->USART_HardwareFlowControl = USART_HardwareFlowControl_None;
\ 00000012 0021 MOVS R1,#+0
\ 00000014 4181 STRH R1,[R0, #+10]
229 USART_InitStruct->USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
\ 00000016 0C21 MOVS R1,#+12
\ 00000018 8181 STRH R1,[R0, #+12]
230 USART_InitStruct->USART_Clock = USART_Clock_Disable;
\ 0000001A 0021 MOVS R1,#+0
\ 0000001C C181 STRH R1,[R0, #+14]
231 USART_InitStruct->USART_CPOL = USART_CPOL_Low;
\ 0000001E 0021 MOVS R1,#+0
\ 00000020 0182 STRH R1,[R0, #+16]
232 USART_InitStruct->USART_CPHA = USART_CPHA_1Edge;
\ 00000022 0021 MOVS R1,#+0
\ 00000024 4182 STRH R1,[R0, #+18]
233 USART_InitStruct->USART_LastBit = USART_LastBit_Disable;
\ 00000026 0021 MOVS R1,#+0
\ 00000028 8182 STRH R1,[R0, #+20]
234 }
\ 0000002A 7047 BX LR ;; return
235
236 /*******************************************************************************
237 * Function Name : USART_Cmd
238 * Description : Enables or disables the specified USART peripheral.
239 * Input : - USARTx: where x can be 1, 2 or 3 to select the USART
240 * peripheral.
241 * : - NewState: new state of the USARTx peripheral.
242 * This parameter can be: ENABLE or DISABLE.
243 * Output : None
244 * Return : None
245 *******************************************************************************/
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