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Diffstat (limited to 'bootloaders/nuevo_diskloader/src')
-rw-r--r--bootloaders/nuevo_diskloader/src/DiskLoader.cpp240
-rw-r--r--bootloaders/nuevo_diskloader/src/USBCore.cpp4
2 files changed, 134 insertions, 110 deletions
diff --git a/bootloaders/nuevo_diskloader/src/DiskLoader.cpp b/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
index a7ccde6..216ddc6 100644
--- a/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
+++ b/bootloaders/nuevo_diskloader/src/DiskLoader.cpp
@@ -109,6 +109,17 @@ const u8 _consts[] =
//}
+void start_sketch()
+{
+ UDCON = 1; // Detatch USB
+ UDIEN = 0;
+ asm volatile ( // Reset vector to run firmware
+ "clr r30\n"
+ "clr r31\n"
+ "ijmp\n"
+ ::);
+}
+
int main(void) __attribute__ ((naked));
int main()
{
@@ -139,117 +150,130 @@ int main()
u16 address = 0;
for (;;)
{
- while (!USB_Available(CDC_RX))
- ;
- u8 cmd = USB_Recv(CDC_RX);
-
- // Read packet contents
- u8 len;
- const u8* rs = _readSize;
- for (;;)
- {
- u8 c = pgm_read_byte(rs++);
- len = pgm_read_byte(rs++);
- if (c == cmd || c == 0)
- break;
- }
- _timeout = 0;
- // Read params
- USB_Recv_block(CDC_RX, packet, len);
-
- // Send a response
- u8 send = 0;
- const u8* pgm = _consts+7;
- if (STK_GET_PARAMETER == cmd)
- {
- u8 i = packet[0] - 0x80;
- if (i > 2)
- i = (i==0x18) ? 3 : 4; // 0x80:HW_VER,0x81:SW_MAJOR,0x82:SW_MINOR,0x18:3 or 0
- pgm = _consts + i + 3;
- send = 1;
- }
- else if (STK_UNIVERSAL == cmd)
- {
- if (packet[0] == 0x30)
- pgm = _consts + packet[2];
- send = 1;
- }
- else if (STK_READ_SIGN == cmd)
- {
- pgm = _consts;
- send = 3;
- }
- else if (STK_LOAD_ADDRESS == cmd)
- {
- address = *((u16*)packet); // word address
- address += address;
- }
- else if (STK_PROG_PAGE == cmd)
- {
- Program(CDC_RX, address, packet[1]);
- }
- else if (STK_READ_PAGE == cmd)
- {
- send = packet[1];
- pgm = (const u8*)address;
- address += send;
- }
-
- // Check sync
-// if (Serial.available() > 0 && Serial.read() != ' ')
-// break;
-// if (USB_Available(CDC_RX) && USB_Recv(CDC_RX) != ' ')
-
-// u8 countdown = 10;
// while (!USB_Available(CDC_RX))
-// {
-// if (countdown-- == 0)
-// break;
-// }
-// u8 x = USB_Recv(CDC_RX);
-// if (x != -1 && x != ' ')
-// {
-// L_LED_ON();
-// break;
-// }
-
-// if (getch() != ' ')
-// break;
-
-// while (!USB_Available(CDC_RX))
// ;
-//
-// int x = USB_Recv(CDC_RX);
-// if (x == -1)
-// {
-// UEINTX = 0x6B;
-// break;
-// }
-// else if (x != ' ')
-// {
-//// UEINTX = 0x6B;
-// break;
-// }
-
- u16 countdown = 5000;
- while (countdown-- > 10 && !USB_Available(CDC_RX))
- ;
- int x = USB_Recv(CDC_RX);
- if (x != -1 && x != ' ')
- break;
-
- USB_Send(CDC_TX, &_inSync, 1);
-
- if (send)
- USB_Send(CDC_TX|TRANSFER_PGM, pgm, send);
-
- // Send ok
- USB_Send(CDC_TX|TRANSFER_RELEASE, &_ok, 1);
-
- if ('Q' == cmd)
+ if (USB_Available(CDC_RX))
{
- do_reset = 500;
- break;
+ u8 cmd = USB_Recv(CDC_RX);
+
+ // Read packet contents
+ u8 len;
+ const u8* rs = _readSize;
+ for (;;)
+ {
+ u8 c = pgm_read_byte(rs++);
+ len = pgm_read_byte(rs++);
+ if (c == cmd || c == 0)
+ break;
+ }
+ _timeout = 0;
+ // Read params
+ USB_Recv_block(CDC_RX, packet, len);
+
+ // Send a response
+ u8 send = 0;
+ const u8* pgm = _consts+7;
+ if (STK_GET_PARAMETER == cmd)
+ {
+ u8 i = packet[0] - 0x80;
+ if (i > 2)
+ i = (i==0x18) ? 3 : 4; // 0x80:HW_VER,0x81:SW_MAJOR,0x82:SW_MINOR,0x18:3 or 0
+ pgm = _consts + i + 3;
+ send = 1;
+ }
+ else if (STK_UNIVERSAL == cmd)
+ {
+ if (packet[0] == 0x30)
+ pgm = _consts + packet[2];
+ send = 1;
+ }
+ else if (STK_READ_SIGN == cmd)
+ {
+ pgm = _consts;
+ send = 3;
+ }
+ else if (STK_LOAD_ADDRESS == cmd)
+ {
+ address = *((u16*)packet); // word address
+ address += address;
+ }
+ else if (STK_PROG_PAGE == cmd)
+ {
+ Program(CDC_RX, address, packet[1]);
+ }
+ else if (STK_READ_PAGE == cmd)
+ {
+ send = packet[1];
+ pgm = (const u8*)address;
+ address += send;
+ }
+
+ // Check sync
+ // if (Serial.available() > 0 && Serial.read() != ' ')
+ // break;
+ // if (USB_Available(CDC_RX) && USB_Recv(CDC_RX) != ' ')
+
+ // u8 countdown = 10;
+ // while (!USB_Available(CDC_RX))
+ // {
+ // if (countdown-- == 0)
+ // break;
+ // }
+ // u8 x = USB_Recv(CDC_RX);
+ // if (x != -1 && x != ' ')
+ // {
+ // L_LED_ON();
+ // break;
+ // }
+
+ // if (getch() != ' ')
+ // break;
+
+ // while (!USB_Available(CDC_RX))
+ // ;
+ //
+ // int x = USB_Recv(CDC_RX);
+ // if (x == -1)
+ // {
+ // UEINTX = 0x6B;
+ // break;
+ // }
+ // else if (x != ' ')
+ // {
+ //// UEINTX = 0x6B;
+ // break;
+ // }
+
+ u16 countdown = 5000;
+ while (countdown-- > 10 && !USB_Available(CDC_RX))
+ ;
+ int x = USB_Recv(CDC_RX);
+ if (x != -1 && x != ' ')
+ break;
+
+ USB_Send(CDC_TX, &_inSync, 1);
+
+ if (send)
+ USB_Send(CDC_TX|TRANSFER_PGM, pgm, send);
+
+ // Send ok
+ USB_Send(CDC_TX|TRANSFER_RELEASE, &_ok, 1);
+
+ if ('Q' == cmd)
+ {
+ _delay_ms(100);
+ /* move interrupts to application section:
+ * uses inline assembly because the procedure must be completed in four cycles.
+ */
+ asm volatile (
+ "ldi r16, 0x01\n" // (1<<IVCE) /* Enable change of interrupt vectors */
+ "out 0x35, r16\n" // MCUCR
+ "ldi r16, 0x00\n" // (1<<IVSEL) /* Move interrupts to application flash section */
+ "out 0x35, r16\n" // MCUCR
+ );
+ start_sketch();
+ // break;
+ }
}
}
}
diff --git a/bootloaders/nuevo_diskloader/src/USBCore.cpp b/bootloaders/nuevo_diskloader/src/USBCore.cpp
index 453c2ff..56944e5 100644
--- a/bootloaders/nuevo_diskloader/src/USBCore.cpp
+++ b/bootloaders/nuevo_diskloader/src/USBCore.cpp
@@ -607,9 +607,9 @@ ISR(USB_GEN_vect)
// Start of Frame - happens every millisecond so we use it for TX and RX LED one-shot timing, too
if (udint & (1<<SOFI))
{
-#ifdef CDC_ENABLED
+//#ifdef CDC_ENABLED
USB_Flush(CDC_TX); // Send a tx frame if found
-#endif
+//#endif
// check whether the one-shot period has elapsed. if so, turn off the LED
if (TxLEDPulse && !(--TxLEDPulse))
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-11-04 05:58:22 +0000