FreeCalypso > hg > fc-usbser-tools
changeset 96:c6d04771bf6a
cp2102-write-eeprom program written, compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 28 Sep 2023 02:38:59 +0000 |
parents | a378bf95c26c |
children | 8d35346f1d46 |
files | .hgignore cp2102/Makefile cp2102/write_eeprom.c cp2102/write_eeprom_main.c |
diffstat | 4 files changed, 108 insertions(+), 1 deletions(-) [+] |
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--- a/.hgignore Thu Sep 28 02:19:39 2023 +0000 +++ b/.hgignore Thu Sep 28 02:38:59 2023 +0000 @@ -8,6 +8,7 @@ ^cp2102/cp2102-read-baudtab$ ^cp2102/cp2102-read-eeprom$ ^cp2102/cp2102-read-partno$ +^cp2102/cp2102-write-eeprom$ ^cp2102/file_rw_test$ ^duart28/fc-duart28-conf$
--- a/cp2102/Makefile Thu Sep 28 02:19:39 2023 +0000 +++ b/cp2102/Makefile Thu Sep 28 02:38:59 2023 +0000 @@ -1,7 +1,8 @@ CC= gcc CFLAGS= -O2 PROGS= cp2102-decode-baudtab cp2102-decode-ee-desc cp2102-patch-ee-image \ - cp2102-read-baudtab cp2102-read-eeprom cp2102-read-partno + cp2102-read-baudtab cp2102-read-eeprom cp2102-read-partno \ + cp2102-write-eeprom NOINST= file_rw_test LIBS= ../libuwrap/libuwrap.a @@ -19,6 +20,7 @@ READ_BAUDTAB_OBJS= decode_baudtab.o read_baudtab.o read_eeprom.o READ_EEPROM_OBJS= intel_hex_out.o read_eeprom.o read_eeprom_main.o RW_TEST_OBJS= intel_hex_in.o intel_hex_out.o file_rw_test.o +WRITE_EEPROM_OBJS= intel_hex_in.o write_eeprom.o write_eeprom_main.o all: ${PROGS} ${NOINST} @@ -40,6 +42,9 @@ cp2102-read-partno: read_partno.o ${LIBS} ${CC} ${CFLAGS} -o $@ read_partno.o ${LIBS} -lusb +cp2102-write-eeprom: ${WRITE_EEPROM_OBJS} ${LIBS} + ${CC} ${CFLAGS} -o $@ ${WRITE_EEPROM_OBJS} ${LIBS} -lusb + file_rw_test: ${RW_TEST_OBJS} ${CC} ${CFLAGS} -o $@ ${RW_TEST_OBJS}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cp2102/write_eeprom.c Thu Sep 28 02:38:59 2023 +0000 @@ -0,0 +1,30 @@ +/* + * This module implements the elementary function for writing the EEPROM + * on a CP2102 device. + */ + +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <usb.h> +#include "cp210x_defs.h" + +extern u_char eeprom[SIZE_EEPROM]; + +void +write_eeprom(usbh) + usb_dev_handle *usbh; +{ + int rc; + + rc = usb_control_msg(usbh, DEVICE_OUT_REQTYPE, CP210x_CONFIG, + REG_EEPROM, 0, (char *) eeprom, SIZE_EEPROM, + USB_WRITE_TIMEOUT); + if (rc != SIZE_EEPROM) { + fprintf(stderr, + "EEPROM write error: usb_control_msg() returned %d\n", + rc); + exit(1); + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cp2102/write_eeprom_main.c Thu Sep 28 02:38:59 2023 +0000 @@ -0,0 +1,71 @@ +/* + * This program reads a CP2102 EEPROM image from an Intel HEX file + * and writes it into a physical CP2102 USB device. + */ + +#include <sys/types.h> +#include <string.h> +#include <strings.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <usb.h> +#include "../libuwrap/find_dev.h" +#include "../libuwrap/open_close.h" +#include "cp210x_defs.h" + +u_char eeprom[SIZE_EEPROM]; +char *device_selector, *input_filename; +int no_detach; + +process_cmdline(argc, argv) + char **argv; +{ + int c; + extern int optind; + extern char *optarg; + + while ((c = getopt(argc, argv, "n")) != EOF) { + switch (c) { + case 'n': + no_detach = 1; + continue; + default: + /* error msg already printed */ + exit(1); + } + } + if (argc != optind + 2) { + fprintf(stderr, + "usage: %s [options] device-selector eeprom-image\n", + argv[0]); + exit(1); + } + device_selector = argv[optind]; + input_filename = argv[optind + 1]; +} + +main(argc, argv) + char **argv; +{ + struct usb_device *dev; + usb_dev_handle *usbh; + + process_cmdline(argc, argv); + read_intel_hex(input_filename); + dev = find_usbdev_by_desc_string(device_selector); + if (!dev) { + fprintf(stderr, "error: specified USB device not found\n"); + exit(1); + } + usbh = usb_open(dev); + if (!usbh) { + fprintf(stderr, "error: usb_open() failed\n"); + exit(1); + } + if (!no_detach) + usbwrap_claim_all_ifs(usbh); + write_eeprom(usbh); + usb_close(usbh); + exit(0); +}