hi to all, i am working on project that in it i need to read and write to micro-sd-card in unit of sector, for done that i decide use keil file system middleware and then use fs_ioc_read_sector and fs_ioc_write_sector function that provided by keil. after following steps that keil provided(good job keil) now i can successfully read sector from sd card with fs_ioc_read_sector function, but when i use fs_ioc_write_sector function to write a sector to sd card it return an fs_error and it dose not write to sd card. my mcu is lpc1788, i use 4-bit mci bus. now can any one help me to find a solution for that?? my code is as below:
fsStatus stat; uint32_t param_status; if(finit ("M0:") != fsOK) { return -1; } drv_id = fs_ioc_get_id ("M0:"); if(drv_id < 0U) return -1; param_status = 0U; // Parameter for function call is 0 // Initialize media if (fs_ioc_device_ctrl (drv_id, fsDevCtrlCodeControlMedia, ¶m_status) != fsOK) { return -1; // Exit if failed } if (fs_ioc_lock (drv_id)) { // Lock media for USB usage return -1; // Exit if failed } stat = fs_ioc_write_sector (drv_id, 1, buf, 1); if (stat != fsOK) { // = fs_error return -1; } fs_ioc_unlock(drv_id); return 1;