有一个奇怪的问题,基本上我不能使用#define指令来声明一个整数,然后将该整数用作函数参数或索引数组。
使以下示例工作的唯一方法是将它们声明为
const uint8_t LOC3 = 3;
和
const uint8_t PORTA = 0;
这是定义:
#define LOC3 3;
下面是函数原型:
void spi_Setup(USART_TypeDef *spi,
uint8_t location, <-- this parameter here
bool master,
char* rxBuffer,
char* txBuffer);
即使将参数声明为int类型,它仍然不允许我像这样调用函数:
spi_Setup(USART1, LOC3, true, receiveBuffer, transmitBuffer);
这同样适用于数组索引:
#define PORTA 0;
这是调用结构:
GPIO->P[PORTA].DOUTCLR = 1 << 1;
如前所述,这些示例都不起作用,
编译器设置:
方言:C99 编译器:GNU ARM 嵌入式工具链
编译器标志:
-g -gdwarf-2 -mcpu=cortex-m0plus -mthumb -std=c99 '-DDEBUG=1' '-DEFM32ZG222F32=1' -I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio developer/sdks/gecko_sdk_suite/v2.3//platform/CMSIS/Include" -I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//hardware/ kit/EFM32ZG_STK3200/config"-I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//hardware/kit/common/bsp"-I" /access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//platform/Device/SiliconLabs/EFM32ZG/Include" -I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//hardware/kit/common/drivers" -O0 -Wall -c -fmessage-length=0 -mno -sched-prolog -fno-builtin -ffunction-sections -fdata-sections
汇编器标志:
-g -gdwarf-2 -mcpu=cortex-m0plus -mthumb -c -x assembler-with-cpp -I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2 .3//platform/CMSIS/Include"-I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//hardware/kit/EFM32ZG_STK3200/config" I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//hardware/kit/common/bsp"-I"/home/access/Downloads/simplicitystudio/ pkg/simplicitystudio/opt/simplicitystudio/developer/sdks/gecko_sdk_suite/v2.3//platform/Device/SiliconLabs/EFM32ZG/Include"-I"/home/access/Downloads/simplicitystudio/pkg/simplicitystudio/opt/simplicitystudioity/opt/ /sdks/gecko_sdk_suite/v2.3//hardware/kit/common/drivers"'-DEFM32ZG222F32=1'
链接器标志:
-g -gdwarf-2 -mcpu=cortex-m0plus -mthumb -T "${BuildArtifactFileBaseName}.ld" -Xlinker --gc-sections -Xlinker -Map="${BuildArtifactFileBaseName}.map" --specs=nano.眼镜
我问过我的老头,他是个老手,他说这很奇怪。我同意,因为我从来没有遇到过以这种方式使用 #defines 的问题,事实上它被认为是约定俗成的。
我试图将数字圈在一组括号中,即
#define LOC3 (3)
然而,这也不起作用。
以前有人遇到过这个问题吗?
提前致谢,MM25
#define LOC3 3;
你需要删除;
否则你的函数调用看起来像
spi_Setup(USART1, 3; , true, receiveBuffer, transmitBuffer);
这不是有效的 C 语法。
#define LOC3 3
将工作。
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我来说两句