#include "common.h"
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#include "common.h"
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#include "support.h"
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#include "support.h"
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#include "spi.h"
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#include "spi.h"
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int touch_cmd (int argc, char *argv[])
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int touch_cmd (int argc, char *argv[])
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{
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{
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unsigned long x, y, z1, z2;
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unsigned long x, y, z1, z2;
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float res;
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float res;
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if (argc == 0) {
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if (argc == 0) {
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printf("usage: -r read coordinates\n");
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printf("usage: -r read coordinates\n");
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printf(" -c read coordinates in a loop (press any key to exit)\n");
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printf(" -c read coordinates in a loop (press any key to exit)\n");
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}
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}
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else if (argc == 1) {
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else if (argc == 1) {
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if (!strcmp(argv[0], "-r")) {
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if (!strcmp(argv[0], "-r")) {
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spi_init(0, 1000000, 21, 0, 1, 0);
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spi_init(0, 1000000, 21, 0, 1, 0);
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printf("X = %.3lx\n", spi_xmit(0xd3l << 13) & 0xfff);
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printf("X = %.3lx\n", spi_xmit(0xd3l << 13) & 0xfff);
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printf("Y = %.3lx\n", spi_xmit(0x93l << 13) & 0xfff);
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printf("Y = %.3lx\n", spi_xmit(0x93l << 13) & 0xfff);
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}
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}
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else if (!strcmp(argv[0], "-c")) {
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else if (!strcmp(argv[0], "-c")) {
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spi_init(0, 1000000, 21, 0, 1, 0);
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spi_init(0, 1000000, 21, 0, 1, 0);
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while (1) {
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while (1) {
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x = spi_xmit(0xd3l << 13) & 0xfff;
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x = spi_xmit(0xd3l << 13) & 0xfff;
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z1 = spi_xmit(0xb3l << 13) & 0xfff;
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z1 = spi_xmit(0xb3l << 13) & 0xfff;
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z2 = spi_xmit(0xc3l << 13) & 0xfff;
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z2 = spi_xmit(0xc3l << 13) & 0xfff;
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res = (z2/z1) - 1;
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res = (z2/z1) - 1;
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res = ((float)x * res)/4096;
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res = ((float)x * res)/4096;
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if ((int)res < 20) {
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if ((int)res < 20) {
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y = spi_xmit(0x93l << 13) & 0xfff;
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y = spi_xmit(0x93l << 13) & 0xfff;
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printf("X = %.3lx\n", x);
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printf("X = %.3lx\n", x);
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printf("Y = %.3lx\n\n", y);
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printf("Y = %.3lx\n\n", y);
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}
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}
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if (testc())
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if (testc())
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break;
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break;
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}
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}
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}
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}
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}
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}
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else {
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else {
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printf("usage: -r read coordinates\n");
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printf("usage: -r read coordinates\n");
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printf(" -c read coordinates in a loop (press any key to exit)\n");
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printf(" -c read coordinates in a loop (press any key to exit)\n");
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}
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}
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return 0;
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return 0;
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}
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}
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void module_touch_init (void)
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void module_touch_init (void)
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{
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{
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register_command ("touch", "", "touch screen utility", touch_cmd);
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register_command ("touch", "", "touch screen utility", touch_cmd);
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}
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}
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