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Save memory

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Store the device string in 8 bit and in program memory. Also
reduce the size of a few variables.
This commit is contained in:
Raphael Assenat 2017-01-08 15:58:45 -05:00
parent b22985712f
commit c7e8dc7ad4
3 changed files with 43 additions and 15 deletions
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23
main.c
View File

@ -55,6 +55,7 @@
#include "dataHidReport.c" #include "dataHidReport.c"
#define MAX_READ_ERRORS 30 #define MAX_READ_ERRORS 30
static uint8_t error_count[MAX_PLAYERS] = { };
struct cfg0 { struct cfg0 {
struct usb_configuration_descriptor configdesc; struct usb_configuration_descriptor configdesc;
@ -434,12 +435,11 @@ int main(void)
{ {
Gamepad *pads[MAX_PLAYERS] = { }; Gamepad *pads[MAX_PLAYERS] = { };
gamepad_data pad_data; gamepad_data pad_data;
unsigned char gamepad_vibrate = 0; uint8_t gamepad_vibrate = 0;
unsigned char state = STATE_WAIT_POLLTIME; uint8_t state = STATE_WAIT_POLLTIME;
int error_count[MAX_PLAYERS] = { }; uint8_t channel;
int i; uint8_t num_players = 1;
int channel; uint8_t i;
int num_players = 1;
hwinit(); hwinit();
usart1_init(); usart1_init();
@ -451,20 +451,21 @@ int main(void)
{ {
default: default:
case CFG_MODE_STANDARD: case CFG_MODE_STANDARD:
usbstrings_changeProductString_P(PSTR("GC/N64 to USB v"VERSIONSTR_SHORT));
break; break;
case CFG_MODE_N64_ONLY: case CFG_MODE_N64_ONLY:
usbstrings_changeProductString(L"N64 to USB v"VERSIONSTR_SHORT); usbstrings_changeProductString_P(PSTR("N64 to USB v"VERSIONSTR_SHORT));
device_descriptor.idProduct = N64_USB_PID; device_descriptor.idProduct = N64_USB_PID;
break; break;
case CFG_MODE_GC_ONLY: case CFG_MODE_GC_ONLY:
usbstrings_changeProductString(L"Gamecube to USB v"VERSIONSTR_SHORT); usbstrings_changeProductString_P(PSTR("Gamecube to USB v"VERSIONSTR_SHORT));
device_descriptor.idProduct = GC_USB_PID; device_descriptor.idProduct = GC_USB_PID;
break; break;
case CFG_MODE_2P_STANDARD: case CFG_MODE_2P_STANDARD:
usbstrings_changeProductString(L"Dual GC/N64 to USB v"VERSIONSTR_SHORT); usbstrings_changeProductString_P(PSTR("Dual GC/N64 to USB v"VERSIONSTR_SHORT));
device_descriptor.idProduct = DUAL_GCN64_USB_PID; device_descriptor.idProduct = DUAL_GCN64_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p; usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p); usb_params.configdesc_ttllen = sizeof(cfg0_2p);
@ -473,7 +474,7 @@ int main(void)
break; break;
case CFG_MODE_2P_N64_ONLY: case CFG_MODE_2P_N64_ONLY:
usbstrings_changeProductString(L"Dual N64 to USB v"VERSIONSTR_SHORT); usbstrings_changeProductString_P(PSTR("Dual N64 to USB v"VERSIONSTR_SHORT));
device_descriptor.idProduct = DUAL_N64_USB_PID; device_descriptor.idProduct = DUAL_N64_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p; usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p); usb_params.configdesc_ttllen = sizeof(cfg0_2p);
@ -482,7 +483,7 @@ int main(void)
break; break;
case CFG_MODE_2P_GC_ONLY: case CFG_MODE_2P_GC_ONLY:
usbstrings_changeProductString(L"Dual Gamecube to USB v"VERSIONSTR_SHORT); usbstrings_changeProductString_P(PSTR("Dual Gamecube to USB v"VERSIONSTR_SHORT));
device_descriptor.idProduct = DUAL_GC_USB_PID; device_descriptor.idProduct = DUAL_GC_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p; usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p); usb_params.configdesc_ttllen = sizeof(cfg0_2p);

25
usbstrings.c
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@ -17,13 +17,32 @@
#include <stdlib.h> // for wchar_t #include <stdlib.h> // for wchar_t
#include "usbstrings.h" #include "usbstrings.h"
static wchar_t product_string[PRODUCT_STRING_MAXCHARS]; // = L"GC/N64 to USB v"VERSIONSTR_SHORT;
const wchar_t *g_usb_strings[] = { const wchar_t *g_usb_strings[] = {
[0] = L"raphnet technologies", // 1 : Vendor [0] = L"raphnet technologies", // 1 : Vendor
[1] = L"GC/N64 to USB v"VERSIONSTR_SHORT, // 2: Product [1] = product_string, // 2: Product
[2] = L"123456", // 3 : Serial [2] = L"123456", // 3 : Serial
}; };
void usbstrings_changeProductString(const wchar_t *str) void usbstrings_changeProductString_P(const char *str)
{ {
g_usb_strings[1] = str; const char *s = str;
wchar_t *d = product_string;
uint8_t c;
int n = 0;
do {
/* Make sure target is always NUL terminated. */
n++;
if (n == PRODUCT_STRING_MAXCHARS) {
*d = 0;
break;
}
c = pgm_read_byte(s);
*d = c;
s++; d++;
} while (c);
} }

10
usbstrings.h
View File

@ -1,13 +1,21 @@
#ifndef _usbstrings_h__ #ifndef _usbstrings_h__
#define _usbstrings_h__ #define _usbstrings_h__
#include <avr/pgmspace.h>
extern const wchar_t *g_usb_strings[]; extern const wchar_t *g_usb_strings[];
/* Sample: "Dual Gamecube to USB v3.4" (25) */
#define PRODUCT_STRING_MAXCHARS 32
#define NUM_USB_STRINGS 3 #define NUM_USB_STRINGS 3
/* Array indexes (i.e. zero-based0 */ /* Array indexes (i.e. zero-based0 */
#define USB_STRING_SERIAL_IDX 2 #define USB_STRING_SERIAL_IDX 2
void usbstrings_changeProductString(const wchar_t *str); /**
* \param str Must be in PROGMEM
*/
void usbstrings_changeProductString_P(const char *str);
#endif #endif