// ============================================================================
// fPowerCycleInitializeTargetForISSP()
// Implements the intialization vectors for the device.
// The first time fDetectHiLoTransition is called the Clk pin is highZ because
// the clock is not needed during acquire.
// Returns:
// 0 if successful
// INIT_ERROR if timed out on handshake to the device.
// ============================================================================
signed char fPowerCycleInitializeTargetForISSP(void)
{
// unsigned char n;
// Set all pins to highZ to avoid back powering the PSoC through the GPIO
// protection diodes.
SetSCLKHiZ();
SetSDATAHiZ();
// Turn on power to the target device before other signals
SetTargetVDDStrong();
RemoveTargetVDD();
mdelay(5);
ApplyTargetVDD();
// wait 1msec for the power to stabilize
mdelay(1);
// Set SCLK to high Z so there is no clock and wait for a high to low
// transition on SDAT. SCLK is not needed this time.
SetSCLKHiZ();
fIsError = fDetectHiLoTransition();
if ( fIsError ) {
printk(KERN_INFO "[TSP] %s, %d\n", __func__, __LINE__);
return(INIT_ERROR);
}
// Configure the pins for initialization
SetSDATAHiZ();
SetSCLKStrong();
SCLKLow(); //PTJ: DO NOT SET A BREAKPOINT HERE AND EXPECT SILICON ID TO PASS!
// !!! NOTE:
// The timing spec that requires that the first Init-Vector happen within
// 1 msec after the reset/power up. For this reason, it is not advisable
// to separate the above RESET_MODE or POWER_CYCLE_MODE code from the
// Init-Vector instructions below. Doing so could introduce excess delay
// and cause the target device to exit ISSP Mode.
SendVector(id_setup_1, num_bits_id_setup_1);
fIsError = fDetectHiLoTransition();
if ( fIsError ) {
printk(KERN_INFO "[TSP] %s, %d\n", __func__, __LINE__);
return(INIT_ERROR);
}
SendVector(wait_and_poll_end, num_bits_wait_and_poll_end);
// NOTE: DO NOT not wait for HiLo on SDATA after vector Init-3
// it does not occur (per spec).
return(PASS);
}
/* ========================================================================= */
void ErrorTrap(unsigned char bErrorNumber)
{
#ifndef RESET_MODE
// Set all pins to highZ to avoid back powering the PSoC through the GPIO
// protection diodes.
SetSCLKHiZ();
SetSDATAHiZ();
// If Power Cycle programming, turn off the target
RemoveTargetVDD();
#endif
// ioctl(touch_fd, DEV_CTRL_TOUCH_INT_ENABLE,NULL);
// printk("[TSP] %s,%d error!!\n",__func__,__LINE__);
// exit(1);
// while (1);
// return(bErrorNumbers);
}
// ============================================================================
// ReStartTarget()
// After programming, the target PSoC must be reset to take it out of
// programming mode. This routine performs a reset.
// ============================================================================
void ReStartTarget(void)
{
#ifdef RESET_MODE
// Assert XRES, then release, then disable XRES-Enable
AssertXRES();
Delay(XRES_CLK_DELAY);
DeassertXRES();
#else
// Set all pins to highZ to avoid back powering the PSoC through the GPIO
// protection diodes.
SetSCLKHiZ();
SetSDATAHiZ();
// Cycle power on the target to cause a reset
RemoveTargetVDD();
mdelay(300);
ApplyTargetVDD();
#endif
}
/* ============================================================================
// ReStartTarget()
// After programming, the target PSoC must be reset to take it out of
// programming mode. This routine performs a reset.
============================================================================*/
void ReStartTarget(void)
{
#ifdef RESET_MODE
/* Assert XRES, then release, then disable XRES-Enable */
AssertXRES();
udelay(XRES_CLK_DELAY);
DeassertXRES();
#else
/* Set all pins to highZ to avoid back powering the PSoC through the GPIO */
/* protection diodes. */
SetSCLKHiZ();
SetSDATAHiZ();
/* Cycle power on the target to cause a reset */
RemoveTargetVDD();
udelay(POWER_CYCLE_DELAY);
ApplyTargetVDD();
#endif
}
void ReStartTarget(void)
{
//int i;
#ifdef RESET_MODE
/* Assert XRES, then release, then disable XRES-Enable */
AssertXRES();
Delay(XRES_CLK_DELAY);
DeassertXRES();
#else
/* Set all pins to highZ to avoid back powering
the PSoC through the GPIO protection diodes.
*/
SetSCLKHiZ();
SetSDATAHiZ();
/* Cycle power on the target to cause a reset */
RemoveTargetVDD();
// jjlee for (i = 0; i < 100; i++)
Delay(50000);
ApplyTargetVDD();
#endif
}
/* ============================================================================
// fPowerCycleInitializeTargetForISSP()
// Implements the intialization vectors for the device.
// The first time fDetectHiLoTransition is called the Clk pin is highZ because
// the clock is not needed during acquire.
// Returns:
// 0 if successful
// INIT_ERROR if timed out on handshake to the device.
============================================================================*/
signed char fPowerCycleInitializeTargetForISSP(void)
{
unsigned char n;
SetSDATALow();
SCLKLow();
RemoveTargetVDD();
mdelay(500);
SetSCLKHiZ();
SetSDATAHiZ();
/* Set all pins to highZ to avoid back powering the PSoC through the GPIO
// protection diodes.
*/
/* Turn on power to the target device before other signals */
SetTargetVDDStrong();
ApplyTargetVDD();
/* wait 1msec for the power to stabilize */
for (n = 0; n < 10; n++)
udelay(DELAY100us);
/* Set SCLK to high Z so there is no clock and wait for a high to low
// transition on SDAT. SCLK is not needed this time.
*/
SetSCLKHiZ();
mdelay(10);
/*
//fIsError = fDetectHiLoTransition();
//if (fIsError ) {
//printk("wly: fDetectHiLoTransition 11111 failed!\n");
//return(INIT_ERROR);
//}
*/
/* Configure the pins for initialization */
SetSDATAHiZ();
SetSCLKStrong();
SCLKLow(); /* DO NOT SET A BREAKPOINT HERE AND EXPECT SILICON ID TO PASS! */
/* !!! NOTE:
// The timing spec that requires that the first Init-Vector happen within
// 1 msec after the reset/power up. For this reason, it is not advisable
// to separate the above RESET_MODE or POWER_CYCLE_MODE code from the
// Init-Vector instructions below. Doing so could introduce excess delay
// and cause the target device to exit ISSP Mode.
*/
SendVector(id_setup_1, num_bits_id_setup_1);
fIsError = fDetectHiLoTransition();
if (fIsError) {
pr_info("wly: fDetectHiLoTransition 222222 failed!\n");
return INIT_ERROR;
}
SendVector(wait_and_poll_end, num_bits_wait_and_poll_end);
/* NOTE: DO NOT not wait for HiLo on SDATA after vector Init-3
// it does not occur (per spec).
*/
return PASS;
}
