FreeCalypso > hg > fc-usbser-tools

annotate libftmini/eeprom_wr.c @ 35:f548ae912622

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doc/FTDI-EEPROM-tools: update for 2023 sans-libftdi version
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 10 Sep 2023 00:18:20 +0000
parents fce3d4baa2b4
children
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fce3d4baa2b4 libftmini: implement EEPROM write
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1 /* elementary FTDI EEPROM write function */
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3 #include <sys/types.h>
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <usb.h>
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7 #include "ftdi_defs.h"
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8 #include "ftdi_tune.h"
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9 #include "eeprom_func.h"
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11 void ftmini_write_eeprom_loc(usb_dev_handle *usbh, u_short addr, u_short val)
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12 {
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13 int rc;
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15 rc = usb_control_msg(usbh, FTDI_DEVICE_OUT_REQTYPE,
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16 SIO_WRITE_EEPROM_REQUEST, val, addr, NULL, 0,
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17 USB_WRITE_TIMEOUT);
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18 if (rc != 0) {
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19 fprintf(stderr,
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20 "EEPROM write error: usb_control_msg() returned %d\n",
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21 rc);
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22 exit(1);
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23 }
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24 }