If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
/*
* Some easy to use #defines
*/
#define DISABLE_PF_WRITE_PROTECT SYSCFG0 = FRWPPW | DFWP
#define DISABLE_DF_WRITE_PROTECT SYSCFG0 = FRWPPW | PFWP
#define DISABLE_PF_DF_WRITE_PROTECT SYSCFG0 = FRWPPW
#define DISABLE_ALL_WRITE_PROTECT SYSCFG0 = FRWPPW
#define ENABLE_PF_WRITE_PROTECT SYSCFG0 = FRWPPW | PFWP
#define ENABLE_DF_WRITE_PROTECT SYSCFG0 = FRWPPW | DFWP
#define ENABLE_PF_DF_WRITE_PROTECT SYSCFG0 = FRWPPW | PFWP | DFWP
#define ENABLE_ALL_WRITE_PROTECT SYSCFG0 = FRWPPW | PFWP | DFWP
/*
* Example
* Declare variable 'peanut' persistent in Info memory at location 0x1800.
* (initialize only once at load time = 0)
*
*/
#pragma PERSISTENT(peanut)
#pragma LOCATION(peanut, 0x1800)
uint16_t peanut = 0;
/*
* Example
* Declare variable 'peach' persistent in Program memory at location 0xE000.
* (initialize only once at load time = 0x1234)
*
*/
#pragma PERSISTENT(peach)
#pragma LOCATION(peach, 0xE002)
uint16_t peach = 0x1234;
/*
* Example
* Declare variable 'apple, compiler will place automatically
* (initialize only once at load time = 0x55AA)
*/
#pragma PERSISTENT(apple)
uint16_t apple = 0x55AA;
/*
* Example
* Declare variable 'walnut' noinit in Info memory at location 0x1802.
* (is not initialized at reset)
*
*/
#pragma NOINIT(walnut)
#pragma LOCATION(walnut, 0x1802)
uint16_t walnut;
uint16_t SYSCFG0_copy;
int main(void)
{
WDTCTL = WDTPW | WDTHOLD; // stop watchdog timer
SYSCFG0_copy = SYSCFG0 & (PFWP | DFWP); // let's first confirm FRAM protection is on by default
peanut = 1; // won't work because DFWP is enabled by default
DISABLE_DF_WRITE_PROTECT; // so must first disable DFWP (DATA FRAM WRITE PROTECT)
peanut = 1; // this time it worked
walnut = 2; // verify we can change walnut
apple = 0x55AA; // won't work because PFWP is enabled by default
DISABLE_PF_WRITE_PROTECT; // must first disable PFWP (PROGRAM FRAM WRITE PROTECT)
apple = 0xAA55; // this time it worked
peach = 0; // verify we can change peach
ENABLE_ALL_WRITE_PROTECT; // Don't forget to protect when done.
while(1);
}
SYSCFG0 = FRWPPW；//编程 FRAM 写入使能 //disable_pf_write_protect；//必须首先禁用 PFWP (程序 FRAM 写保护)
Apple = 0xAA55；//这次它起作用
SYSCFG0 = FRWPPW | PFWP；//编程 FRAM 写保护 //enable_PF_WRITE_PROTECT；//完成后不要忘记进行保护。
//收到的错误如下所示
写入长度为0x8的第0页0xf100处的存储器块时遇到问题：无法擦除器件存储器 MSP430：文件加载器：验证失败：目标写入0x0F100失败 MSP430：GEL：文件：D：\Vijender、s old Data\Drive-E\Sensor\Sensor\Basin_sensor\Debug\Basin_sensor.out：加载失败。
