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git://projects.qi-hardware.com/ben-blinkenlights.git
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lpc111x-isp/lpc111x.c: new option -P function=signal to reassign pins
This commit is contained in:
Werner Almesberger
parent
3b0c8c699e
commit
376aa543a9
@ -17,6 +17,7 @@
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <strings.h> /* for strcasecmp, strncasecmp */
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#include <alloca.h>
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#include <assert.h>
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#include <sys/types.h>
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@ -58,7 +59,7 @@ static struct pin {
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const char *name;
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const char *alt_name;
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uint32_t pin;
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} pin[] = {
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} pins[] = {
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[pin_rxd] = { "RXD", "P1_6", UBB_DAT2 },
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[pin_txd] = { "TXD", "P1_7", UBB_DAT3 },
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[pin_nisp] = { "nISP", "P0_1", UBB_DAT1 },
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@ -66,6 +67,19 @@ static struct pin {
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[pin_end] = { NULL }
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};
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static const struct signal {
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const char *name;
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uint32_t pin;
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} signals[] = {
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{ "CMD", UBB_CMD },
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{ "CLK", UBB_CLK },
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{ "DAT0", UBB_DAT0 },
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{ "DAT1", UBB_DAT1 },
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{ "DAT2", UBB_DAT2 },
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{ "DAT3", UBB_DAT3 },
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{ NULL }
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};
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static int verbose = 0;
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static int quiet = 0;
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@ -223,9 +237,9 @@ static int autobaud(void)
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const char *res;
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for (i = 0; i != AUTOBAUD_TRIES; i++) {
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CLR(pin[pin_nreset].pin);
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CLR(pins[pin_nreset].pin);
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usleep(10); /* DS Table 9 pg 29 says min 50 ns */
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SET(pin[pin_nreset].pin);
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SET(pins[pin_nreset].pin);
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usleep(5*1000); /* UM 26.3.1 pg 408 says max 3 ms */
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@ -555,13 +569,13 @@ static void start_isp(int power)
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usleep(100*1000);
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SET(pin[pin_nreset].pin);
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OUT(pin[pin_nreset].pin);
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SET(pins[pin_nreset].pin);
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OUT(pins[pin_nreset].pin);
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CLR(pin[pin_nisp].pin);
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OUT(pin[pin_nisp].pin);
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CLR(pins[pin_nisp].pin);
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OUT(pins[pin_nisp].pin);
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if (swuart_open(pin[pin_rxd].pin, pin[pin_txd].pin, BPS) < 0) {
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if (swuart_open(pins[pin_rxd].pin, pins[pin_txd].pin, BPS) < 0) {
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perror("swuart_open");
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exit(1);
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}
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@ -592,16 +606,16 @@ static void run_target(int power)
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if (power)
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ubb_power(1);
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SET(pin[pin_nreset].pin);
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OUT(pin[pin_nreset].pin);
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SET(pins[pin_nreset].pin);
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OUT(pins[pin_nreset].pin);
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IN(pin[pin_nisp].pin);
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IN(pins[pin_nisp].pin);
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CLR(pin[pin_nreset].pin);
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CLR(pins[pin_nreset].pin);
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usleep(10); /* DS Table 9 pg 29 says min 50 ns */
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SET(pin[pin_nreset].pin);
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SET(pins[pin_nreset].pin);
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ubb_close(UBB_nPWR | pin[pin_nreset].pin | pin[pin_nisp].pin);
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ubb_close(UBB_nPWR | pins[pin_nreset].pin | pins[pin_nisp].pin);
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}
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@ -610,18 +624,67 @@ static void run_target(int power)
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static void usage(const char *name)
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{
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const struct signal *signal;
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int i;
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fprintf(stderr,
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"usage: %s [-n] [-q] [-v ...] [file.bin]\n"
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" %s [-n] -r\n\n"
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" -n don't power the device\n"
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" -q suppress basic progress messages\n"
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" -r reset the target and let it run\n"
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" -v increase verbosity level\n"
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"usage: %s [-P function=signal ...] [-n] [-q] [-v ...] [file.bin]\n"
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" %s [-P function=signal ...] [-n] -r\n\n"
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" -n don't power the device\n"
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" -q suppress basic progress messages\n"
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" -P function=signal assign a 8:10 interface signal to a function "
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"(see below)\n"
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" -r reset the target and let it run\n"
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" -v increase verbosity level\n\n"
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"Functions: RXD (P1_6), TXD (P1_7), nISP (P0_1), nRESET (P0_0)\n"
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"Signals: CMD, CLK, DAT0, DAT1, DAT2, DAT3\n"
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, name, name);
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fprintf(stderr, "Default mapping:");
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for (i = 0; i != pin_end; i++) {
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for (signal = signals; signal->pin != pins[i].pin; signal++);
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fprintf(stderr, " -P %s=%s", pins[i].name, signal->name);
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}
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fprintf(stderr, "\n");
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exit(1);
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}
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static void assign_pin(const char *name, const char *s)
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{
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const char *eq;
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struct pin *pin;
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const struct signal *signal;
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eq = strchr(s, '=');
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if (!eq)
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usage(name);
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for (pin = pins; pin->name; pin++) {
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if (strlen(pin->name) == eq-s &&
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!strncasecmp(pin->name, s, eq-s))
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break;
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if (strlen(pin->alt_name) == eq-s &&
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!strncasecmp(pin->alt_name, s, eq-s))
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break;
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}
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if (!pin->name) {
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fprintf(stderr, "unknown function \"%.*s\"\n", eq-s, s);
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exit(1);
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}
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for (signal = signals; signal->name; signal++)
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if (!strcasecmp(signal->name, eq+1))
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break;
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if (!signal->name) {
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fprintf(stderr, "unknown signal \"%s\"\n", eq+1);
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exit(1);
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}
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pin->pin = signal->pin;
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}
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int main(int argc, char **argv)
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{
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FILE *file = NULL;
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@ -629,11 +692,14 @@ int main(int argc, char **argv)
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int run = 0;
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int c;
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while ((c = getopt(argc, argv, "nqrv")) != EOF)
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while ((c = getopt(argc, argv, "nP:qrv")) != EOF)
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switch (c) {
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case 'n':
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power = 0;
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break;
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case 'P':
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assign_pin(*argv, optarg);
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break;
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case 'q':
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quiet = 1;
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break;
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