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Diffstat (limited to 'Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c')
-rw-r--r--Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c243
1 files changed, 1 insertions, 242 deletions
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
index e2c6fd6a2..72a38f824 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
@@ -39,115 +39,13 @@
#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
/** Flag to indicate if the USART is currently in Tx or Rx mode. */
-volatile bool IsSending;
-
-#if !defined(XPROG_VIA_HARDWARE_USART)
-/** Software USART raw frame bits for transmission/reception. */
-volatile uint16_t SoftUSART_Data;
-
-/** Bits remaining to be sent or received via the software USART - set as a GPIOR for speed. */
-#define SoftUSART_BitCount GPIOR2
-
-
-/** ISR to manage the PDI software USART when bit-banged PDI USART mode is selected. */
-ISR(TIMER1_COMPA_vect, ISR_BLOCK)
-{
- /* Toggle CLOCK pin in a single cycle (see AVR datasheet) */
- BITBANG_PDICLOCK_PIN = BITBANG_PDICLOCK_MASK;
-
- /* If not sending or receiving, just exit */
- if (!(SoftUSART_BitCount))
- return;
-
- /* Check to see if we are at a rising or falling edge of the clock */
- if (BITBANG_PDICLOCK_PORT & BITBANG_PDICLOCK_MASK)
- {
- /* If at rising clock edge and we are in send mode, abort */
- if (IsSending)
- return;
-
- /* Wait for the start bit when receiving */
- if ((SoftUSART_BitCount == BITS_IN_USART_FRAME) && (BITBANG_PDIDATA_PIN & BITBANG_PDIDATA_MASK))
- return;
-
- /* Shift in the bit one less than the frame size in position, so that the start bit will eventually
- * be discarded leaving the data to be byte-aligned for quick access (subtract 9 as we are ORing to the MSB) */
- if (BITBANG_PDIDATA_PIN & BITBANG_PDIDATA_MASK)
- ((uint8_t*)&SoftUSART_Data)[1] |= (1 << (BITS_IN_USART_FRAME - 9));
-
- SoftUSART_Data >>= 1;
- SoftUSART_BitCount--;
- }
- else
- {
- /* If at falling clock edge and we are in receive mode, abort */
- if (!IsSending)
- return;
-
- /* Set the data line to the next bit value */
- if (((uint8_t*)&SoftUSART_Data)[0] & 0x01)
- BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;
- else
- BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;
-
- SoftUSART_Data >>= 1;
- SoftUSART_BitCount--;
- }
-}
-
-/** ISR to manage the TPI software USART when bit-banged TPI USART mode is selected. */
-ISR(TIMER1_CAPT_vect, ISR_BLOCK)
-{
- /* Toggle CLOCK pin in a single cycle (see AVR datasheet) */
- BITBANG_TPICLOCK_PIN = BITBANG_TPICLOCK_MASK;
-
- /* If not sending or receiving, just exit */
- if (!(SoftUSART_BitCount))
- return;
-
- /* Check to see if we are at a rising or falling edge of the clock */
- if (BITBANG_TPICLOCK_PORT & BITBANG_TPICLOCK_MASK)
- {
- /* If at rising clock edge and we are in send mode, abort */
- if (IsSending)
- return;
-
- /* Wait for the start bit when receiving */
- if ((SoftUSART_BitCount == BITS_IN_USART_FRAME) && (BITBANG_TPIDATA_PIN & BITBANG_TPIDATA_MASK))
- return;
-
- /* Shift in the bit one less than the frame size in position, so that the start bit will eventually
- * be discarded leaving the data to be byte-aligned for quick access (subtract 9 as we are ORing to the MSB) */
- if (BITBANG_TPIDATA_PIN & BITBANG_TPIDATA_MASK)
- ((uint8_t*)&SoftUSART_Data)[1] |= (1 << (BITS_IN_USART_FRAME - 9));
-
- SoftUSART_Data >>= 1;
- SoftUSART_BitCount--;
- }
- else
- {
- /* If at falling clock edge and we are in receive mode, abort */
- if (!IsSending)
- return;
-
- /* Set the data line to the next bit value */
- if (((uint8_t*)&SoftUSART_Data)[0] & 0x01)
- BITBANG_TPIDATA_PORT |= BITBANG_TPIDATA_MASK;
- else
- BITBANG_TPIDATA_PORT &= ~BITBANG_TPIDATA_MASK;
-
- SoftUSART_Data >>= 1;
- SoftUSART_BitCount--;
- }
-}
-#endif
+volatile bool IsSending;
/** Enables the target's PDI interface, holding the target in reset until PDI mode is exited. */
void XPROGTarget_EnableTargetPDI(void)
{
IsSending = false;
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Set Tx and XCK as outputs, Rx as input */
DDRD |= (1 << 5) | (1 << 3);
DDRD &= ~(1 << 2);
@@ -160,24 +58,6 @@ void XPROGTarget_EnableTargetPDI(void)
UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED);
UCSR1B = (1 << TXEN1);
UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
-#else
- /* Set DATA and CLOCK lines to outputs */
- BITBANG_PDIDATA_DDR |= BITBANG_PDIDATA_MASK;
- BITBANG_PDICLOCK_DDR |= BITBANG_PDICLOCK_MASK;
-
- /* Set DATA line low for at least 1ms to ensure that the device is ready for PDI mode to be entered */
- BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;
- _delay_ms(1);
-
- /* Set DATA line high for at least 90ns to disable /RESET functionality */
- BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;
- _delay_us(1);
-
- /* Fire timer compare channel A ISR to manage the software USART */
- OCR1A = BITS_BETWEEN_USART_CLOCKS;
- TCCR1B = (1 << WGM12) | (1 << CS10);
- TIMSK1 = (1 << OCIE1A);
-#endif
/* Send two BREAKs of 12 bits each to enable PDI interface (need at least 16 idle bits) */
XPROGTarget_SendBreak();
@@ -194,7 +74,6 @@ void XPROGTarget_EnableTargetTPI(void)
AUX_LINE_PORT &= ~AUX_LINE_MASK;
_delay_us(1);
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Set Tx and XCK as outputs, Rx as input */
DDRD |= (1 << 5) | (1 << 3);
DDRD &= ~(1 << 2);
@@ -203,19 +82,6 @@ void XPROGTarget_EnableTargetTPI(void)
UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED);
UCSR1B = (1 << TXEN1);
UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
-#else
- /* Set DATA and CLOCK lines to outputs */
- BITBANG_TPIDATA_DDR |= BITBANG_TPIDATA_MASK;
- BITBANG_TPICLOCK_DDR |= BITBANG_TPICLOCK_MASK;
-
- /* Set DATA line high for idle state */
- BITBANG_TPIDATA_PORT |= BITBANG_TPIDATA_MASK;
-
- /* Fire timer capture channel ISR to manage the software USART */
- ICR1 = BITS_BETWEEN_USART_CLOCKS;
- TCCR1B = (1 << WGM13) | (1 << WGM12) | (1 << CS10);
- TIMSK1 = (1 << ICIE1);
-#endif
/* Send two BREAKs of 12 bits each to enable TPI interface (need at least 16 idle bits) */
XPROGTarget_SendBreak();
@@ -228,7 +94,6 @@ void XPROGTarget_DisableTargetPDI(void)
/* Switch to Rx mode to ensure that all pending transmissions are complete */
XPROGTarget_SetRxMode();
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Turn off receiver and transmitter of the USART, clear settings */
UCSR1A = ((1 << TXC1) | (1 << RXC1));
UCSR1B = 0;
@@ -237,18 +102,6 @@ void XPROGTarget_DisableTargetPDI(void)
/* Tristate all pins */
DDRD &= ~((1 << 5) | (1 << 3));
PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2));
-#else
- /* Turn off software USART management timer */
- TCCR1B = 0;
-
- /* Set DATA and CLOCK lines to inputs */
- BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;
- BITBANG_PDICLOCK_DDR &= ~BITBANG_PDICLOCK_MASK;
-
- /* Tristate DATA and CLOCK lines */
- BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;
- BITBANG_PDICLOCK_PORT &= ~BITBANG_PDICLOCK_MASK;
-#endif
}
/** Disables the target's TPI interface, exits programming mode and starts the target's application. */
@@ -257,7 +110,6 @@ void XPROGTarget_DisableTargetTPI(void)
/* Switch to Rx mode to ensure that all pending transmissions are complete */
XPROGTarget_SetRxMode();
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Turn off receiver and transmitter of the USART, clear settings */
UCSR1A |= (1 << TXC1) | (1 << RXC1);
UCSR1B = 0;
@@ -266,18 +118,6 @@ void XPROGTarget_DisableTargetTPI(void)
/* Set all USART lines as input, tristate */
DDRD &= ~((1 << 5) | (1 << 3));
PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2));
-#else
- /* Turn off software USART management timer */
- TCCR1B = 0;
-
- /* Set DATA and CLOCK lines to inputs */
- BITBANG_TPIDATA_DDR &= ~BITBANG_TPIDATA_MASK;
- BITBANG_TPICLOCK_DDR &= ~BITBANG_TPICLOCK_MASK;
-
- /* Tristate DATA and CLOCK lines */
- BITBANG_TPIDATA_PORT &= ~BITBANG_TPIDATA_MASK;
- BITBANG_TPICLOCK_PORT &= ~BITBANG_TPICLOCK_MASK;
-#endif
/* Tristate target /RESET line */
AUX_LINE_DDR &= ~AUX_LINE_MASK;
@@ -294,30 +134,10 @@ void XPROGTarget_SendByte(const uint8_t Byte)
if (!(IsSending))
XPROGTarget_SetTxMode();
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Wait until there is space in the hardware Tx buffer before writing */
while (!(UCSR1A & (1 << UDRE1)));
UCSR1A |= (1 << TXC1);
UDR1 = Byte;
-#else
- /* Calculate the new USART frame data here while while we wait for a previous byte (if any) to finish sending */
- uint16_t NewUSARTData = ((1 << 11) | (1 << 10) | (0 << 9) | ((uint16_t)Byte << 1) | (0 << 0));
-
- /* Compute Even parity - while a bit is still set, chop off lowest bit and toggle parity bit */
- uint8_t ParityData = Byte;
- while (ParityData)
- {
- NewUSARTData ^= (1 << 9);
- ParityData &= (ParityData - 1);
- }
-
- /* Wait until transmitter is idle before writing new data */
- while (SoftUSART_BitCount);
-
- /* Data shifted out LSB first, START DATA PARITY STOP STOP */
- SoftUSART_Data = NewUSARTData;
- SoftUSART_BitCount = BITS_IN_USART_FRAME;
-#endif
if (TimeoutMSRemaining)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
@@ -333,7 +153,6 @@ uint8_t XPROGTarget_ReceiveByte(void)
if (IsSending)
XPROGTarget_SetRxMode();
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Wait until a byte has been received before reading */
while (!(UCSR1A & (1 << RXC1)) && TimeoutMSRemaining);
@@ -341,17 +160,6 @@ uint8_t XPROGTarget_ReceiveByte(void)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
return UDR1;
-#else
- /* Wait until a byte has been received before reading */
- SoftUSART_BitCount = BITS_IN_USART_FRAME;
- while (SoftUSART_BitCount && TimeoutMSRemaining);
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-
- /* Throw away the parity and stop bits to leave only the data (start bit is already discarded) */
- return (uint8_t)SoftUSART_Data;
-#endif
}
/** Sends a BREAK via the USART to the attached target, consisting of a full frame of idle bits. */
@@ -361,7 +169,6 @@ void XPROGTarget_SendBreak(void)
if (!(IsSending))
XPROGTarget_SetTxMode();
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Need to do nothing for a full frame to send a BREAK */
for (uint8_t i = 0; i < BITS_IN_USART_FRAME; i++)
{
@@ -369,13 +176,6 @@ void XPROGTarget_SendBreak(void)
while (PIND & (1 << 5));
while (!(PIND & (1 << 5)));
}
-#else
- while (SoftUSART_BitCount);
-
- /* Need to do nothing for a full frame to send a BREAK */
- SoftUSART_Data = 0x0FFF;
- SoftUSART_BitCount = BITS_IN_USART_FRAME;
-#endif
if (TimeoutMSRemaining)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
@@ -383,7 +183,6 @@ void XPROGTarget_SendBreak(void)
static void XPROGTarget_SetTxMode(void)
{
-#if defined(XPROG_VIA_HARDWARE_USART)
/* Wait for a full cycle of the clock */
while (PIND & (1 << 5));
while (!(PIND & (1 << 5)));
@@ -395,25 +194,6 @@ static void XPROGTarget_SetTxMode(void)
UCSR1B |= (1 << TXEN1);
IsSending = true;
-#else
- while (SoftUSART_BitCount && TimeoutMSRemaining);
-
- /* Wait for a full cycle of the clock */
- SoftUSART_Data = 0x0001;
- SoftUSART_BitCount = 1;
- while (SoftUSART_BitCount);
-
- if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
- {
- BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;
- BITBANG_PDIDATA_DDR |= BITBANG_PDIDATA_MASK;
- }
- else
- {
- BITBANG_TPIDATA_PORT |= BITBANG_TPIDATA_MASK;
- BITBANG_TPIDATA_DDR |= BITBANG_TPIDATA_MASK;
- }
-#endif
if (TimeoutMSRemaining)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
@@ -423,7 +203,6 @@ static void XPROGTarget_SetTxMode(void)
static void XPROGTarget_SetRxMode(void)
{
-#if defined(XPROG_VIA_HARDWARE_USART)
while (!(UCSR1A & (1 << TXC1)));
UCSR1A |= (1 << TXC1);
@@ -432,26 +211,6 @@ static void XPROGTarget_SetRxMode(void)
DDRD &= ~(1 << 3);
PORTD &= ~(1 << 3);
-#else
- while (SoftUSART_BitCount && TimeoutMSRemaining);
-
- if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
- {
- BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;
- BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;
-
- /* Wait until DATA line has been pulled up to idle by the target */
- while (!(BITBANG_PDIDATA_PIN & BITBANG_PDIDATA_MASK) && TimeoutMSRemaining);
- }
- else
- {
- BITBANG_TPIDATA_DDR &= ~BITBANG_TPIDATA_MASK;
- BITBANG_TPIDATA_PORT &= ~BITBANG_TPIDATA_MASK;
-
- /* Wait until DATA line has been pulled up to idle by the target */
- while (!(BITBANG_TPIDATA_PIN & BITBANG_TPIDATA_MASK) && TimeoutMSRemaining);
- }
-#endif
if (TimeoutMSRemaining)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 10:09:23 +0000