moved libs to the lib directory
This commit is contained in:
171
lib/l502/l502api_eeprom.c
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171
lib/l502/l502api_eeprom.c
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#include "l502api_private.h"
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#include "ltimer.h"
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#include "l502_fpga_regs.h"
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#define L502_EEPROM_BIG_SECTOR_SIZE (64*1024)
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#define L502_EEPROM_SMALL_SECTOR_SIZE (4*1024)
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#define L502_FLASH_WRITE_TOUT 500
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#define L502_FLASH_ERASE_TOUT 500
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/** биты регистра статуса */
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typedef enum {
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SST25_STATUS_BUSY = 0x01,
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SST25_STATUS_WEL = 0x02,
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SST25_STATUS_BP0 = 0x04,
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SST25_STATUS_BP1 = 0x08,
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SST25_STATUS_BP2 = 0x10,
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SST25_STATUS_BP3 = 0x20,
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SST25_STATUS_AAI = 0x40,
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SST25_STATUS_BPL = 0x80
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} t_sst25_status_bits;
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static uint8_t f_prot_bits[] = {
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SST25_STATUS_BP2 | SST25_STATUS_BP1 | SST25_STATUS_BP0,
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SST25_STATUS_BP2 | SST25_STATUS_BP0,
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SST25_STATUS_BP2,
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SST25_STATUS_BP0,
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0
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};
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static LINLINE int32_t f_eeprom_rd_status(t_x502_hnd hnd, uint8_t* stat) {
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uint32_t val;
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int32_t err = l502_port_fpga_reg_read(hnd, L502_REGS_EEPROM_RD_STATUS, &val);
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if (err == X502_ERR_OK)
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*stat = (val>>24)&0xFF;
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return err;
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}
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static LINLINE int32_t f_eeprom_wr_status(t_x502_hnd hnd, uint8_t stat) {
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int32_t err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_STATUS_EN, 1);
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if (err == X502_ERR_OK) {
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_STATUS, stat);
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}
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return err;
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}
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static int32_t f_eeprom_wr_byte(t_x502_hnd hnd, uint32_t addr, uint8_t val) {
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int32_t err = X502_ERR_OK;
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t_ltimer tmr;
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uint8_t stat = SST25_STATUS_BUSY;
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/* разрешаем запись в EEPROM */
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_EN, 1);
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if (err == X502_ERR_OK) {
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_BYTE, ((addr & 0xFFFFFF) << 8) | val);
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if (err != X502_ERR_OK)
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l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_DIS, 1);
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}
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if (err == X502_ERR_OK)
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ltimer_set(&tmr, LTIMER_MS_TO_CLOCK_TICKS(L502_FLASH_WRITE_TOUT));
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/* Ожидаем завершения записи */
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while ((err == X502_ERR_OK) && (stat & SST25_STATUS_BUSY) && !ltimer_expired(&tmr)) {
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err = f_eeprom_rd_status(hnd, &stat);
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}
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if ((err == X502_ERR_OK) && (stat & SST25_STATUS_BUSY)) {
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err = X502_ERR_FLASH_WRITE_TOUT;
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}
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return err;
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}
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int32_t l502_iface_flash_rd(t_x502_hnd hnd, uint32_t addr, uint8_t* data, uint32_t size) {
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int32_t err = X502_ERR_OK;
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uint32_t val;
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_SET_RD_ADDR, (addr & 0xFFFFFF) << 8);
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if (err == X502_ERR_OK)
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err = l502_port_fpga_reg_read(hnd, L502_REGS_EEPROM_RD_DWORD, &val);
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if (err == X502_ERR_OK) {
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unsigned int i;
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for (i=0; (i < sizeof(val)) && size; i++, size--) {
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*data++ = val & 0xFF;
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val >>= 8;
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}
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}
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return err;
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}
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int32_t l502_iface_flash_wr(t_x502_hnd hnd, uint32_t addr, const uint8_t* data, uint32_t size) {
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uint32_t i;
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int32_t err = X502_ERR_OK;
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for (i=0; (i < size) && (err == X502_ERR_OK); i++) {
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err = f_eeprom_wr_byte(hnd, addr+i, data[i]);
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}
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return err;
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}
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int32_t l502_iface_flash_erase(t_x502_hnd hnd, uint32_t addr, uint32_t size) {
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int32_t err = X502_ERR_OK;
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if (((addr & (L502_EEPROM_SMALL_SECTOR_SIZE-1)) ||
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(size & (L502_EEPROM_SMALL_SECTOR_SIZE-1)))) {
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err = X502_ERR_FLASH_SECTOR_BOUNDARY;
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}
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while((size != 0) && (err == X502_ERR_OK)) {
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uint32_t er_size;
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/* разрешаем запись в EEPROM */
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_EN, 1);
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if (err == X502_ERR_OK) {
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uint8_t stat = SST25_STATUS_BUSY;
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t_ltimer tmr;
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/* проверяем - можем ли стереть целиком большой сектор или
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придется писать в мелкий */
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if ((size >= L502_EEPROM_BIG_SECTOR_SIZE) &&
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!(size & (L502_EEPROM_BIG_SECTOR_SIZE-1))) {
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er_size = L502_EEPROM_BIG_SECTOR_SIZE;
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_ERASE_64K, addr<<8);
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} else {
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er_size = L502_EEPROM_SMALL_SECTOR_SIZE;
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_ERASE_4K, addr<<8);
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}
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if (err == X502_ERR_OK)
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ltimer_set(&tmr, LTIMER_MS_TO_CLOCK_TICKS(L502_FLASH_ERASE_TOUT));
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/* ожидаем завершения стирания */
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while ((err == X502_ERR_OK) && (stat & SST25_STATUS_BUSY) && !ltimer_expired(&tmr)) {
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err = f_eeprom_rd_status(hnd, &stat);
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}
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if ((err == X502_ERR_OK) && (stat & SST25_STATUS_BUSY)) {
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err = X502_ERR_FLASH_ERASE_TOUT;
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}
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/* запрещаем запись, если произошла ошибка. при успешном стирании
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запись будут запрещена атоматически */
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if (err != X502_ERR_OK)
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l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_EN, 0);
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if (err == X502_ERR_OK) {
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addr += er_size;
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size -= er_size;
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}
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}
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}
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return err;
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}
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int32_t l502_iface_flash_set_prot(t_x502_hnd hnd, uint32_t prot, const uint8_t* prot_data, uint32_t size) {
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int32_t err = X502_ERR_OK;
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uint16_t prot_code = 0;
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if (size == 2) {
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prot_code = ((uint16_t)prot_data[1] << 8) | prot_data[0];
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}
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_STATUS_EN, 1);
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if ((err == X502_ERR_OK) && (prot_code != 0))
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_HARD_WR_STATUS_EN, prot_code);
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if (err == X502_ERR_OK)
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err = l502_port_fpga_reg_write(hnd, L502_REGS_EEPROM_WR_STATUS, f_prot_bits[prot]);
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return err;
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}
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