MSP430 flash写入(二)
2022-09-07 来源:csdn
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//******************************************************************************
// MSP430F552x 例程 - Flash In-System Programming w/ 在地址0x1800长字写入
// 这段程序首先擦除flash seg D, 然后在地址0x1800写入一个32-bit的数据
// ACLK = REFO = 32kHz, MCLK = SMCLK = default DCO 1048576Hz
//
// MSP430x552x
// -----------------
// /|| XIN|-
// | | |
// --|RST XOUT|-
// | |
//
//
// Bhargavi Nisarga
// Texas Instruments Inc.
// April 2009
// Built with CCSv4 and IAR Embedded Workbench Version: 4.21
//******************************************************************************
#include int main(void) { unsigned long * Flash_ptrD; // 初始化Seg D指针 unsigned long value; WDTCTL = WDTPW+WDTHOLD; // 关闭看门狗 Flash_ptrD = (unsigned long *) 0x1800; // 初始化Flash pointer value = 0x12345678; // 初始化Value FCTL3 = FWKEY; // Clear Lock bit FCTL1 = FWKEY+ERASE; // Set Erase bit *Flash_ptrD = 0; // Dummy write to erase Flash seg FCTL1 = FWKEY+BLKWRT; // Enable long-word write *Flash_ptrD = value; // Write to Flash FCTL1 = FWKEY; // Clear WRT bit FCTL3 = FWKEY+LOCK; // Set LOCK bit while(1); // Loop forever, SET BREAKPOINT HERE }