📄 stm32f10x_i2c.lst
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549 I2Cx->DR = Data;
\ I2C_SendData:
\ 00000000 C9B2 UXTB R1,R1 ;; ZeroExtS R1,R1,#+24,#+24
\ 00000002 0182 STRH R1,[R0, #+16]
550 }
\ 00000004 7047 BX LR ;; return
551
552 /*******************************************************************************
553 * Function Name : I2C_ReceiveData
554 * Description : Returns the most recent received data by the I2Cx peripheral.
555 * Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
556 * Output : None
557 * Return : The value of the received data.
558 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
559 u8 I2C_ReceiveData(I2C_TypeDef* I2Cx)
560 {
561 /* Return the data in the DR register */
562 return (u8)I2Cx->DR;
\ I2C_ReceiveData:
\ 00000000 008A LDRH R0,[R0, #+16]
\ 00000002 C0B2 UXTB R0,R0 ;; ZeroExtS R0,R0,#+24,#+24
\ 00000004 7047 BX LR ;; return
563 }
564
565 /*******************************************************************************
566 * Function Name : I2C_Send7bitAddress
567 * Description : Transmits the address byte to select the slave device.
568 * Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
569 * - Address: specifies the slave address which will be transmitted
570 * - I2C_Direction: specifies whether the I2C device will be a
571 * Transmitter or a Receiver.
572 * This parameter can be one of the following values
573 * - I2C_Direction_Transmitter: Transmitter mode
574 * - I2C_Direction_Receiver: Receiver mode
575 * Output : None
576 * Return : None.
577 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
578 void I2C_Send7bitAddress(I2C_TypeDef* I2Cx, u8 Address, u8 I2C_Direction)
579 {
580 /* Check the parameters */
581 assert_param(IS_I2C_DIRECTION(I2C_Direction));
582
583 /* Test on the direction to set/reset the read/write bit */
584 if (I2C_Direction != I2C_Direction_Transmitter)
\ I2C_Send7bitAddress:
\ 00000000 D2B2 UXTB R2,R2 ;; ZeroExtS R2,R2,#+24,#+24
\ 00000002 002A CMP R2,#+0
\ 00000004 02D0 BEQ.N ??I2C_Send7bitAddress_0
585 {
586 /* Set the address ADD0 bit0 for read */
587 Address |= OAR1_ADD0_Set;
\ 00000006 51F00101 ORRS R1,R1,#0x1
\ 0000000A 01E0 B.N ??I2C_Send7bitAddress_1
588 }
589 else
590 {
591 /* Reset the address bit0 for write */
592 Address &= OAR1_ADD0_Reset;
\ ??I2C_Send7bitAddress_0:
\ 0000000C 11F0FE01 ANDS R1,R1,#0xFE
593 }
594 /* Send the address */
595 I2Cx->DR = Address;
\ ??I2C_Send7bitAddress_1:
\ 00000010 C9B2 UXTB R1,R1 ;; ZeroExtS R1,R1,#+24,#+24
\ 00000012 0182 STRH R1,[R0, #+16]
596 }
\ 00000014 7047 BX LR ;; return
597
598 /*******************************************************************************
599 * Function Name : I2C_ReadRegister
600 * Description : Reads the specified I2C register and returns its value.
601 * Input1 : - I2C_Register: specifies the register to read.
602 * This parameter can be one of the following values:
603 * - I2C_Register_CR1: CR1 register.
604 * - I2C_Register_CR2: CR2 register.
605 * - I2C_Register_OAR1: OAR1 register.
606 * - I2C_Register_OAR2: OAR2 register.
607 * - I2C_Register_DR: DR register.
608 * - I2C_Register_SR1: SR1 register.
609 * - I2C_Register_SR2: SR2 register.
610 * - I2C_Register_CCR: CCR register.
611 * - I2C_Register_TRISE: TRISE register.
612 * Output : None
613 * Return : The value of the read register.
614 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
615 u16 I2C_ReadRegister(I2C_TypeDef* I2Cx, u8 I2C_Register)
616 {
617 /* Check the parameters */
618 assert_param(IS_I2C_REGISTER(I2C_Register));
619
620 /* Return the selected register value */
621 return (*(u16 *)(*((u32 *)&I2Cx) + I2C_Register));
\ I2C_ReadRegister:
\ 00000000 C9B2 UXTB R1,R1 ;; ZeroExtS R1,R1,#+24,#+24
\ 00000002 405A LDRH R0,[R0, R1]
\ 00000004 80B2 UXTH R0,R0 ;; ZeroExtS R0,R0,#+16,#+16
\ 00000006 7047 BX LR ;; return
622 }
623
624 /*******************************************************************************
625 * Function Name : I2C_SoftwareResetCmd
626 * Description : Enables or disables the specified I2C software reset.
627 * Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
628 * - NewState: new state of the I2C software reset.
629 * This parameter can be: ENABLE or DISABLE.
630 * Output : None
631 * Return : None
632 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
633 void I2C_SoftwareResetCmd(I2C_TypeDef* I2Cx, FunctionalState NewState)
634 {
635 /* Check the parameters */
636 assert_param(IS_FUNCTIONAL_STATE(NewState));
637
638 if (NewState != DISABLE)
\ I2C_SoftwareResetCmd:
\ 00000000 C9B2 UXTB R1,R1 ;; ZeroExtS R1,R1,#+24,#+24
\ 00000002 0029 CMP R1,#+0
\ 00000004 04D0 BEQ.N ??I2C_SoftwareResetCmd_0
639 {
640 /* Peripheral under reset */
641 I2Cx->CR1 |= CR1_SWRST_Set;
\ 00000006 0288 LDRH R2,[R0, #+0]
\ 00000008 52F40042 ORRS R2,R2,#0x8000
\ 0000000C 0280 STRH R2,[R0, #+0]
\ 0000000E 03E0 B.N ??I2C_SoftwareResetCmd_1
642 }
643 else
644 {
645 /* Peripheral not under reset */
646 I2Cx->CR1 &= CR1_SWRST_Reset;
\ ??I2C_SoftwareResetCmd_0:
\ 00000010 0288 LDRH R2,[R0, #+0]
\ 00000012 5204 LSLS R2,R2,#+17 ;; ZeroExtS R2,R2,#+17,#+17
\ 00000014 520C LSRS R2,R2,#+17
\ 00000016 0280 STRH R2,[R0, #+0]
647 }
648 }
\ ??I2C_SoftwareResetCmd_1:
\ 00000018 7047 BX LR ;; return
649
650 /*******************************************************************************
651 * Function Name : I2C_SMBusAlertConfig
652 * Description : Drives the SMBusAlert pin high or low for the specified I2C.
653 * Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
654 * - I2C_SMBusAlert: specifies SMBAlert pin level.
655 * This parameter can be one of the following values:
656 * - I2C_SMBusAlert_Low: SMBAlert pin driven low
657 * - I2C_SMBusAlert_High: SMBAlert pin driven high
658 * Output : None
659 * Return : None
660 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
661 void I2C_SMBusAlertConfig(I2C_TypeDef* I2Cx, u16 I2C_SMBusAlert)
662 {
663 /* Check the parameters */
664 assert_param(IS_I2C_SMBUS_ALERT(I2C_SMBusAlert));
665
666 if (I2C_SMBusAlert == I2C_SMBusAlert_Low)
\ I2C_SMBusAlertConfig:
\ 00000000 5FF40052 MOVS R2,#+8192
\ 00000004 89B2 UXTH R1,R1 ;; ZeroExtS R1,R1,#+16,#+16
\ 00000006 9142 CMP R1,R2
\ 00000008 04D1 BNE.N ??I2C_SMBusAlertConfig_0
667 {
668 /* Drive the SMBusAlert pin Low */
669 I2Cx->CR1 |= I2C_SMBusAlert_Low;
\ 0000000A 0288 LDRH R2,[R0, #+0]
\ 0000000C 52F40052 ORRS R2,R2,#0x2000
\ 00000010 0280 STRH R2,[R0, #+0]
\ 00000012 03E0 B.N ??I2C_SMBusAlertConfig_1
670 }
671 else
672 {
673 /* Drive the SMBusAlert pin High */
674 I2Cx->CR1 &= I2C_SMBusAlert_High;
\ ??I2C_SMBusAlertConfig_0:
\ 00000014 0288 LDRH R2,[R0, #+0]
\ 00000016 024B LDR.N R3,??I2C_SMBusAlertConfig_2 ;; 0xcfff
\ 00000018 1340 ANDS R3,R3,R2
\ 0000001A 0380 STRH R3,[R0, #+0]
675 }
676 }
\ ??I2C_SMBusAlertConfig_1:
\ 0000001C 7047 BX LR ;; return
\ 0000001E 00BF Nop
\ ??I2C_SMBusAlertConfig_2:
\ 00000020 FFCF0000 DC32 0xcfff
677
678 /*******************************************************************************
679 * Function Name : I2C_TransmitPEC
680 * Description : Enables or disables the specified I2C PEC transfer.
681 * Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral.
682 * - NewState: new state of the I2C PEC transmission.
683 * This parameter can be: ENABLE or DISABLE.
684 * Output : None
685 * Return : None
686 *******************************************************************************/
\ In section .XML, align 4, keep-with-next
687 void I2C_TransmitPEC(I2C_TypeDef* I2Cx, FunctionalState NewState)
688 {
689 /* Check the parameters */
690 assert_param(IS_FUNCTIONAL_STATE(NewState));
691
692 if (NewState != DISABLE)
\ I2C_TransmitPEC:
\ 00000000 C9B2 UXTB R1,R1 ;; ZeroExtS R1,R1,#+24,#+24
\ 00000002 0029 CMP R1,#+0
\ 00000004 04D0 BEQ.N ??I2C_TransmitPEC_0
693 {
694 /* Enable the selected I2C PEC transmission */
695 I2Cx->CR1 |= CR1_PEC_Set;
\ 00000006 0288 LDRH R2,[R0, #+0]
\ 00000008 52F48052 ORRS R2,R2,#0x1000
\ 0000000C 0280 STRH R2,[R0, #+0]
\ 0000000E 03E0 B.N ??I2C_TransmitPEC_1
696 }
697 else
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