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#include "d51_util.h"
static volatile uint32_t w;
// Display unsigned 32-bit number by port toggling DBG_1 (to view on a scope)
// Read as follows: 1230 = | | | | | | || (note zero is fast double toggle)
#define DBG_PAUSE 5
void dbg_print(uint32_t x) {
int8_t t;
uint32_t n;
uint32_t p, p2;
if (x < 10)
t = 0;
else if (x < 100)
t = 1;
else if (x < 1000)
t = 2;
else if (x < 10000)
t = 3;
else if (x < 100000)
t = 4;
else if (x < 1000000)
t = 5;
else if (x < 10000000)
t = 6;
else if (x < 100000000)
t = 7;
else if (x < 1000000000)
t = 8;
else
t = 9;
while (t >= 0) {
p2 = t;
p = 1;
while (p2--)
p *= 10;
n = x / p;
x -= n * p;
if (!n) {
DBG_1_ON;
DBG_1_OFF;
DBG_1_ON;
DBG_1_OFF;
n--;
} else {
while (n > 0) {
DBG_1_ON;
DBG_1_OFF;
n--;
}
}
t--;
}
for (w = DBG_PAUSE; w; w--)
; // Long pause after number is complete
}
// Display unsigned 32-bit number through debug led
// Read as follows: 1230 = [*] [* *] [* * *] [**] (note zero is fast double flash)
#define DLED_ONTIME 1000000
#define DLED_PAUSE 1500000
void dled_print(uint32_t x, uint8_t long_pause) {
int8_t t;
uint32_t n;
uint32_t p, p2;
if (x < 10)
t = 0;
else if (x < 100)
t = 1;
else if (x < 1000)
t = 2;
else if (x < 10000)
t = 3;
else if (x < 100000)
t = 4;
else if (x < 1000000)
t = 5;
else if (x < 10000000)
t = 6;
else if (x < 100000000)
t = 7;
else if (x < 1000000000)
t = 8;
else
t = 9;
while (t >= 0) {
p2 = t;
p = 1;
while (p2--)
p *= 10;
n = x / p;
x -= n * p;
if (!n) {
DBG_LED_ON;
for (w = DLED_ONTIME / 4; w; w--)
;
DBG_LED_OFF;
for (w = DLED_ONTIME / 4; w; w--)
;
DBG_LED_ON;
for (w = DLED_ONTIME / 4; w; w--)
;
DBG_LED_OFF;
for (w = DLED_ONTIME / 4; w; w--)
;
n--;
} else {
while (n > 0) {
DBG_LED_ON;
for (w = DLED_ONTIME; w; w--)
;
DBG_LED_OFF;
for (w = DLED_ONTIME / 2; w; w--)
;
n--;
}
}
for (w = DLED_PAUSE; w; w--)
;
t--;
}
if (long_pause) {
for (w = DLED_PAUSE * 4; w; w--)
;
}
}
#ifdef DEBUG_BOOT_TRACING_ENABLE
volatile uint32_t debug_code;
// These macros are for compile time substitution
# define DEBUG_BOOT_TRACING_EXTINTn (DEBUG_BOOT_TRACING_PIN % _U_(0x10))
# define DEBUG_BOOT_TRACING_EXTINTb (_U_(0x1) << DEBUG_BOOT_TRACING_EXTINTn)
# define DEBUG_BOOT_TRACING_CONFIG_INDn (DEBUG_BOOT_TRACING_EXTINTn / _U_(0x8))
# define DEBUG_BOOT_TRACING_CONFIG_SENSEn (DEBUG_BOOT_TRACING_EXTINTn % _U_(0x8))
# define DEBUG_BOOT_TRACING_CONFIG_SENSEb (DEBUG_BOOT_TRACING_CONFIG_SENSEn * _U_(0x4))
# define DEBUG_BOOT_TRACING_IRQn (EIC_0_IRQn + DEBUG_BOOT_TRACING_EXTINTn)
// These macros perform PORT+PIN definition translation to IRQn in the preprocessor
# define PORTPIN_TO_IRQn_EXPAND(def) def
# define PORTPIN_TO_IRQn_DEF(def) PORTPIN_TO_IRQn_EXPAND(def)
# if DEBUG_BOOT_TRACING_PIN < 10
# define PORTPIN_TO_IRQn_TODEF(port, pin) PORTPIN_TO_IRQn_DEF(PIN_##port##0##pin##A_EIC_EXTINT_NUM)
# else
# define PORTPIN_TO_IRQn_TODEF(port, pin) PORTPIN_TO_IRQn_DEF(PIN_##port##pin##A_EIC_EXTINT_NUM)
# endif
# define PORTPIN_TO_IRQn(port, pin) PORTPIN_TO_IRQn_TODEF(port, pin)
// These macros perform function name output in the preprocessor
# define DEBUG_BOOT_TRACING_HANDLER_CONCAT(irq) void EIC_##irq##_Handler(void)
# define DEBUG_BOOT_TRACING_HANDLER(irq) DEBUG_BOOT_TRACING_HANDLER_CONCAT(irq)
// To generate the function name of the IRQ handler catching boot tracing,
// certain macros must be undefined, so save their current values to macro stack
# pragma push_macro("PA")
# pragma push_macro("PB")
# pragma push_macro("_L_")
// Undefine / redefine pushed macros
# undef PA
# undef PB
# undef _L_
# define _L_(x) x
// Perform the work and output
// Ex: PORT PB, PIN 31 = void EIC_15_Handler(void)
DEBUG_BOOT_TRACING_HANDLER(PORTPIN_TO_IRQn(DEBUG_BOOT_TRACING_PORT, DEBUG_BOOT_TRACING_PIN))
// Restore macros
# pragma pop_macro("PA")
# pragma pop_macro("PB")
# pragma pop_macro("_L_")
{
// This is only for non-functional keyboard troubleshooting and should be disabled after boot
// Intention is to lock up the keyboard here with repeating debug led code
while (1) {
dled_print(debug_code, 1);
}
}
void debug_code_init(void) {
DBGC(DC_UNSET);
// Configure Ports for EIC
PORT->Group[DEBUG_BOOT_TRACING_PORT].DIRCLR.reg = 1 << DEBUG_BOOT_TRACING_PIN; // Input
PORT->Group[DEBUG_BOOT_TRACING_PORT].OUTSET.reg = 1 << DEBUG_BOOT_TRACING_PIN; // High
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.INEN = 1; // Input Enable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.PULLEN = 1; // Pull Enable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.PMUXEN = 1; // Mux Enable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PMUX[DEBUG_BOOT_TRACING_PIN / 2].bit.PMUXO = 0; // Mux A
// Enable CLK_EIC_APB
MCLK->APBAMASK.bit.EIC_ = 1;
// Configure EIC
EIC->CTRLA.bit.SWRST = 1;
while (EIC->SYNCBUSY.bit.SWRST) {
}
EIC->ASYNCH.reg = DEBUG_BOOT_TRACING_EXTINTb;
EIC->INTENSET.reg = DEBUG_BOOT_TRACING_EXTINTb;
EIC->CONFIG[DEBUG_BOOT_TRACING_CONFIG_INDn].reg |= (EIC_CONFIG_SENSE0_FALL_Val << DEBUG_BOOT_TRACING_CONFIG_SENSEb);
EIC->CTRLA.bit.ENABLE = 1;
while (EIC->SYNCBUSY.bit.ENABLE) {
}
// Enable EIC IRQ
NVIC_EnableIRQ(DEBUG_BOOT_TRACING_IRQn);
}
void debug_code_disable(void) {
// Disable EIC IRQ
NVIC_DisableIRQ(DEBUG_BOOT_TRACING_IRQn);
// Disable EIC
EIC->CTRLA.bit.ENABLE = 0;
while (EIC->SYNCBUSY.bit.ENABLE) {
}
// Default port configuration
PORT->Group[DEBUG_BOOT_TRACING_PORT].DIRCLR.reg = 1 << DEBUG_BOOT_TRACING_PIN; // Input
PORT->Group[DEBUG_BOOT_TRACING_PORT].OUTCLR.reg = 1 << DEBUG_BOOT_TRACING_PIN; // Low
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.INEN = 0; // Input Disable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.PULLEN = 0; // Pull Disable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PINCFG[DEBUG_BOOT_TRACING_PIN].bit.PMUXEN = 0; // Mux Disable
PORT->Group[DEBUG_BOOT_TRACING_PORT].PMUX[DEBUG_BOOT_TRACING_PIN / 2].bit.PMUXO = 0; // Mux A
// Disable CLK_EIC_APB
MCLK->APBAMASK.bit.EIC_ = 0;
}
#else
void debug_code_init(void) {}
void debug_code_disable(void) {}
#endif // DEBUG_BOOT_TRACING_ENABLE
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