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STM8S 固件库GPIO设置问题

时间:05-23 10:04 阅读:3956次

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简介： STM8S 固件库GPIO设置问题

ST对STM8S系列都有提供固件库，而不同的版本自然存在一些不同，版本也一直从V1.0.0升级到目前的V1.1.1。

环境： FWLIB V1.0.1版本，采用STM8SF103

在使用GPIO库时，一个偶然发现stm8s_gpio.h中的宏定义是存在问题的。

代码定义如下：

****************************************************************************** *@filestm8s_gpio.h *@briefThisfilecontainsallfunctionsprototypeandmacrosfortheGPIOperipheral. *@authorSTMicroelectronics-MCDApplicationTeam *@versionV1.0.1 *@date09/22/2008 ****************************************************************************** /** *@briefGPIOmodes * *Bitsdefinitions: *-Bit7:0=INPUTmode *1=OUTPUTmode *1=PULL-UP(input)orPUSH-PULL(output) *-Bit5:0=Noexternalinterrupt(input)orNoslopecontrol(output) *1=Externalinterrupt(input)orSlowcontrolenabled(output) *-Bit4:0=Lowlevel(output) *1=Highlevel(outputpush-pull)orHI-Z(outputopen-drain) */ typedefenum { GPIO_MODE_IN_FL_NO_IT=(u8)0b00000000,/*!<Inputfloating,noexternalinterrupt*/ GPIO_MODE_IN_PU_NO_IT=(u8)0b01000000,/*!<Inputpull-up,noexternalinterrupt*/ GPIO_MODE_IN_FL_IT=(u8)0b00100000,/*!<Inputfloating,externalinterrupt*/ GPIO_MODE_IN_PU_IT=(u8)0b01100000,/*!<Inputpull-up,externalinterrupt*/ GPIO_MODE_OUT_OD_LOW_FAST=(u8)0b10000000,/*!<Outputopen-drain,lowlevel,noslopecontrol*/ GPIO_MODE_OUT_PP_LOW_FAST=(u8)0b11000000,/*!<Outputpush-pull,lowlevel,noslopecontrol*/ GPIO_MODE_OUT_OD_LOW_SLOW=(u8)0b10100000,/*!<Outputopen-drain,lowlevel,slowslope*/ GPIO_MODE_OUT_PP_LOW_SLOW=(u8)0b11100000,/*!<Outputpush-pull,lowlevel,slowslope*/ GPIO_MODE_OUT_OD_HIZ_FAST=(u8)0b10010000,/*!<Outputopen-drain,high-impedancelevel,noslopecontrol*/ GPIO_MODE_OUT_PP_HIGH_FAST=(u8)0b11010000,/*!<Outputpush-pull,highlevel,noslopecontrol*/ GPIO_MODE_OUT_OD_HIZ_SLOW=(u8)0b10110000,/*!<Outputopen-drain,high-impedancelevel,slowslope*/ GPIO_MODE_OUT_PP_HIGH_SLOW=(u8)0b11110000/*!<Outputpush-pull,highlevel,slowslope*/ }GPIO_Mode_TypeDef;

我在main.c中是直接这样用的 GPIO_Init(GPIOC,GPIO_PIN_ALL,GPIO_MODE_OUT_PP_HIGH_FAST); //将GPIOC所有IO口设置成推挽输出，10M速度。空闲IO口设置为输出低电平能降低不必要的功耗。

但是调试查看寄存器时发现 CR2寄存器全为0，不应该才对。手册上清晰的表明了为1为设置10M速度。

翻看stm8s_gpio.c中的GPIO_Init函数，有设置CR2寄存器，前提是根据GPIO_MODE掩码来进行判断，判断的根据就是 Bit 5。如下：

if((((u8)(GPIO_Mode))&(u8)0x20)!=(u8)0x00)/*InterruptorSlowslope*/ { GPIOx->CR2|=GPIO_Pin; }else/*NoexternalinterruptorNoslopecontrol*/ { GPIOx->CR2&=(u8)(~(GPIO_Pin)); }

继续查看固件库，对于V1.1.1来说不存在这个问题，如：

****************************************************************************** *@filestm8s_gpio.h *@briefThisfilecontainsallfunctionsprototypeandmacrosfortheGPIOperipheral. *@authorSTMicroelectronics-MCDApplicationTeam *@versionV1.1.1 *@date06/05/2009 ****************************************************************************** /** *@briefGPIOmodes * *Bitsdefinitions: *-Bit7:0=INPUTmode *1=OUTPUTmode *1=PULL-UP(input)orPUSH-PULL(output) *-Bit5:0=Noexternalinterrupt(input)orNoslopecontrol(output) *1=Externalinterrupt(input)orSlowcontrolenabled(output) *-Bit4:0=Lowlevel(output) *1=Highlevel(outputpush-pull)orHI-Z(outputopen-drain) */ typedefenum { GPIO_MODE_IN_FL_NO_IT=(u8)0b00000000,/*!<Inputfloating,noexternalinterrupt*/ GPIO_MODE_IN_PU_NO_IT=(u8)0b01000000,/*!<Inputpull-up,noexternalinterrupt*/ GPIO_MODE_IN_FL_IT=(u8)0b00100000,/*!<Inputfloating,externalinterrupt*/ GPIO_MODE_IN_PU_IT=(u8)0b01100000,/*!<Inputpull-up,externalinterrupt*/ GPIO_MODE_OUT_OD_LOW_FAST=(u8)0b10100000,/*!<Outputopen-drain,lowlevel,10MHz*/ GPIO_MODE_OUT_PP_LOW_FAST=(u8)0b11100000,/*!<Outputpush-pull,lowlevel,10MHz*/ GPIO_MODE_OUT_OD_LOW_SLOW=(u8)0b10000000,/*!<Outputopen-drain,lowlevel,2MHz*/ GPIO_MODE_OUT_PP_LOW_SLOW=(u8)0b11000000,/*!<Outputpush-pull,lowlevel,2MHz*/ GPIO_MODE_OUT_OD_HIZ_FAST=(u8)0b10110000,/*!<Outputopen-drain,high-impedancelevel,10MHz*/ GPIO_MODE_OUT_PP_HIGH_FAST=(u8)0b11110000,/*!<Outputpush-pull,highlevel,10MHz*/ GPIO_MODE_OUT_OD_HIZ_SLOW=(u8)0b10010000,/*!<Outputopen-drain,high-impedancelevel,2MHz*/ GPIO_MODE_OUT_PP_HIGH_SLOW=(u8)0b11010000/*!<Outputpush-pull,highlevel,2MHz*/ }GPIO_Mode_TypeDef;

同样是GPIO_MODE_OUT_PP_HIGH_FAST，前者定义为 0b11010000，而后者则是 0b11110000。

后来从发行日志里也了解到，ST已经更正了这个错误。

@code

General

-------

+ Project template updated for both STVD and RIDE toolchains

+ Almost peripheral examples reviewed and validated with both Cosmic and Raisonance

compilers

library

-------

+ stm8s.h:

- __CONST definition added for Cosmic and Raisonance compilers

- TINY definition added for Cosmic and Raisonance compilers

- NEAR definition added for Raisonance compilers

- CAN registers declaration updated

- ADC1 registers declaration updated

+ stm8s_adc1.h:

- IS_ADC1_BUFFER_OK macro definition updated

+ stm8s_beep.c:

- BEEP_Init function updated

- BEEP->CSR |= BEEP_CSR_BEEPEN; removed from init function

+ stm8s_can.c/.h:

- Private variables declaration changed to volatile

- CAN_DeInit function updated

- CAN_Receive function updated

- CAN_FilterInit funtion updated

- CAN_Transmit function updated

- CAN_IT_TypeDef enum updated:

- CAN_IT_ERR and CAN_IT_LEC definition updated to avoid ANSI check

error with Cosmic

+ stm8s_clk.h:

- CLK_Peripheral_TypeDef enum updated:

- CLK_PERIPHERAL_UART1 definition updated and conditioned by the

device to use

+ stm8s_gpio.h:

- The GPIO_Mode_TypeDef enum element definition updated:

- GPIO_MODE_OUT_OD_LOW_FAST

- GPIO_MODE_OUT_PP_LOW_FAST

- GPIO_MODE_OUT_OD_LOW_SLOW

- GPIO_MODE_OUT_PP_LOW_SLOW

- GPIO_MODE_OUT_OD_HIZ_FAST

- GPIO_MODE_OUT_PP_HIGH_FAST

- GPIO_MODE_OUT_OD_HIZ_SLOW

- GPIO_MODE_OUT_PP_HIGH_SLOW

使用FWLIB V1.1.1替换FWLIB V1.0.1过程中，需要注意新版本中不存在 stm8s_macro.h，stm8s_map.h，取而代之的是stm8s.h，而且stm8s.h中外设宏配置也与旧版本不同。对于外设的编译判断旧版采用的是stm8s_conf.h文件，而新版则是根据芯片的型号。

旧版：在stm8s_map.h中进行编译宏条件判断

#ifdef _ADC1

#define ADC1 ((ADC1_TypeDef *) ADC1_BaseAddress)

#endif

#ifdef _ADC2

#define ADC2 ((ADC2_TypeDef *) ADC2_BaseAddress)

#endif

#ifdef _ITC

#define ITC ((ITC_TypeDef *) ITC_BaseAddress)

#endif

#ifdef _CFG

#define CFG ((CFG_TypeDef *) CFG_BaseAddress)