Flash erase

wanghaitao — Tue, 10 Dec 2024 11:21:51 GMT

/* Specify the memory areas */ MEMORY { /* APP从300KB开始，且总的APP区域 700KB */ m_interrupts (RX) : ORIGIN = 0x00000000, LENGTH = 0x00000400 m_flash_config (RX) : ORIGIN = 0x00000400, LENGTH = 0x00000010 m_text (RX) : ORIGIN = 0x00000410, LENGTH = 0x000AF000 - 0x00000410 /* 标定参数区域从0x000AF000开始，且总的标定参数区域 64KB */ m_calibration_rom (RX) : ORIGIN = 0x000AF000, LENGTH = 0x00010000 /* SRAM_L */ /* 从SRAM_L区域中划分标定参数区域 */ m_data (RW) : ORIGIN = 0x1FFE0000, LENGTH = 0x00020000 - 0x00010000 m_calibration_ram (RW) : ORIGIN = 0x1FFE0000 + 0x00020000 - 0x00010000, LENGTH = 0x00010000 /* SRAM_U */ m_data_2 (RW) : ORIGIN = 0x20000000, LENGTH = 0x0001F000 }

/* 定义标定参数ROM区 */ .calibration_rom : { . = ALIGN(4); calibration_data_rom_start = .; /* ROM区域起始地址 */ *(.calibration_rom) calibration_data_rom_end = .; /* ROM区域结束地址 */ . = ALIGN(4); } > m_calibration_rom /* 定义标定参数RAM区 */ .calibration : { . = ALIGN(4); calibration_data_ram_start = .; /* RAM区域起始地址 */ *(.calibration) calibration_data_ram_end = .; /* RAM区域结束地址 */ . = ALIGN(4); } > m_calibration_ram AT > m_calibration_rom calibration_data_rom_end = calibration_data_rom_start + (calibration_data_ram_end - calibration_data_ram_start);

测试代码

uint32_t test_addr = 0x000AF000; // S32K148的FLASH_DRV_EraseSector最小擦除扇区大小是 4KB status = FLASH_DRV_EraseSector(&g_flash_ssd_config, test_addr, 4096); // 验证擦除 status = FLASH_DRV_VerifySection(&g_flash_ssd_config, test_addr, 4096 / 16, 1u); uint8_t data[8] = {0x07,0x77,0,0,0,0,0,0}; // S32K148的FLASH_DRV_Program最小可写大小是8B status = FLASH_DRV_Program(&g_flash_ssd_config, test_addr, 8, data); // S32K148的FLASH_DRV_ProgramSection最小可写大小是1KB //flashResult = FLASH_DRV_ProgramSection(&g_flash_ssd_config, CANID_private_addr, 4096 / 16); uint32_t failAddr = 0; // 验证写数据 status = FLASH_DRV_ProgramCheck(&g_flash_ssd_config, test_addr, 8, data, &failAddr, 1u);

如上，我想通过flash驱动擦除m_calibration_rom(0xAF000)区域，但是无法擦除。同样的擦除函数我可以擦除0xBF000区域（0xAF000 + 0x10000后的地址），请问各位大佬有何解决想法。我使用的MCU是S32K148。

Re: Flash erase

danielmartynek — Wed, 11 Dec 2024 11:35:31 GMT

Hi @wanghaitao,

Can you read the error flags right after the FTFC command is finished (CCIF = 1)?

Regards,

Daniel

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Re: Flash erase