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independent programmer

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This commit is contained in:
Alessandro Mauri 2026-04-05 20:08:18 +02:00
parent 03bf92f505
commit 821380d21c
3 changed files with 56 additions and 86 deletions
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6
fw/programmer/src/bitbang_rvswdio.h
View File

@ -188,7 +188,7 @@ static int InitializeSWDSWIO( struct SWIOState * state )
if( MCFReadReg32( state, DMSTATUS, &dmstatus ) != 0 ||
MCFReadReg32( state, DMCONTROL, &dmcontrol ) != 0 )
{
//BB_PRINTF_DEBUG( "Could not read from RVSWD connection\n" );
BB_PRINTF_DEBUG( "Could not read from RVSWD connection\n" );
state->opmode = 0;
continue;
}
@ -198,7 +198,7 @@ static int InitializeSWDSWIO( struct SWIOState * state )
( ( dmstatus >> 8 ) & 0xf ) != 0x03 ) ||
dmcontrol != 1 )
{
//BB_PRINTF_DEBUG( "DMSTATUS invalid (Probably no RVSWD chip)\n" );
BB_PRINTF_DEBUG( "DMSTATUS invalid (Probably no RVSWD chip)\n" );
state->opmode = 0;
continue;
}
@ -207,7 +207,7 @@ static int InitializeSWDSWIO( struct SWIOState * state )
BB_PRINTF_DEBUG( "Found RVSWD interface\n" );
return 0;
}
//printf( "TIMEOUT\n" );
BB_PRINTF_DEBUG( "TIMEOUT\n" );
return -55;
}

7
fw/programmer/src/bitbang_rvswdio_pico.h
View File

@ -37,7 +37,7 @@ static inline void ConfigureIOForRVSWD(void)
// Single wire input-output SDI (just SWDIO)
static inline void ConfigureIOForRVSWIO(void)
{
BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
//BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
}
@ -84,7 +84,7 @@ static void MCFWriteReg32( struct SWIOState * state, uint8_t command, uint32_t v
{
// only supported mode is SWD
if (state->opmode != 2) {
BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
//BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
return;
}
@ -138,7 +138,7 @@ static int MCFReadReg32( struct SWIOState * state, uint8_t command, uint32_t * v
{
// only supported mode is SWD
if (state->opmode != 2) {
BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
//BB_PRINTF_DEBUG( "TODO: add support for SWIO\n" );
return -1;
}
@ -192,5 +192,6 @@ static int MCFReadReg32( struct SWIOState * state, uint8_t command, uint32_t * v
read_end:
interrupts();
sleep_us(STOP_WAIT);
BB_PRINTF_DEBUG("wrong parity: %d\n", parity_read);
return (parity == parity_read) ? 0 : -1;
}

129
fw/programmer/src/main.cpp
View File

@ -1,90 +1,59 @@
#include "pico/time.h"
#include <Arduino.h>
#include <SerialUSB.h>
#include "pico/time.h"
#include <Arduino.h>
#include <SerialUSB.h>
//#define BB_PRINTF_DEBUG(...) Serial.printf(__VA_ARGS__)
#define BB_PRINTF_DEBUG(...)
#include "bitbang_rvswdio.h"
#include "bitbang_rvswdio_pico.h"
#define BB_PRINTF_DEBUG(...) Serial.printf(__VA_ARGS__)
//#define BB_PRINTF_DEBUG(...)
#include "bitbang_rvswdio.h"
#include "bitbang_rvswdio_pico.h"
#define PROTOCOL_START '!'
#define PROTOCOL_ACK '+'
#define PROTOCOL_TEST '?'
#define PROTOCOL_POWER_ON 'p'
#define PROTOCOL_POWER_OFF 'P'
#define PROTOCOL_WRITE_REG 'w'
#define PROTOCOL_READ_REG 'r'
SWIOState state = {.opmode = 2};
bool last_dtr = false;
SWIOState state = {.opmode = 2};
void setup() {
Serial.begin(115200);
Serial.setTimeout(100);
ConfigureIOForRVSWD();
// We do NOT block waiting for Serial here,
// we handle the connection dynamically in the loop.
}
void setup() {
Serial.begin(115200);
Serial.setTimeout(100);
}
void setup1()
{
pinMode(LED_BUILTIN, OUTPUT);
}
void setup1()
{
pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
// Monitor DTR line to simulate Arduino Reset behavior
bool current_dtr = Serial.dtr();
if (current_dtr && !last_dtr) {
// minichlink just opened the port
ConfigureIOForRVSWD();
while (Serial.available() > 0) { Serial.read(); }
delay(100);
Serial.write(PROTOCOL_START); // Announce readiness
}
last_dtr = current_dtr;
void loop() {
if (Serial.available() > 0) {
char cmd = Serial.read();
int ret = 0;
uint8_t reg;
if (Serial.available() > 0) {
char cmd = Serial.read();
uint8_t reg;
uint32_t val;
switch (cmd) {
case PROTOCOL_TEST:
Serial.write(PROTOCOL_ACK);
break;
case PROTOCOL_POWER_ON:
// Not needed for rvswd
sleep_us(10);
Serial.write(PROTOCOL_ACK);
break;
case PROTOCOL_POWER_OFF:
// Not needed for rvswd
sleep_us(10);
Serial.write(PROTOCOL_ACK);
break;
case PROTOCOL_WRITE_REG:
if (Serial.readBytes((char*)&reg, sizeof(uint8_t)) != 1) break;
if (Serial.readBytes((char*)&val, sizeof(uint32_t)) != 4) break;
MCFWriteReg32(&state, reg, val);
Serial.write(PROTOCOL_ACK);
break;
case PROTOCOL_READ_REG:
if (Serial.readBytes((char*)&reg, sizeof(uint8_t)) != 1) break;
MCFReadReg32(&state, reg, &val);
Serial.write((char*)&val, sizeof(uint32_t));
break;
}
}
}
switch (cmd) {
case '!':
state = {};
ret = InitializeSWDSWIO(&state);
if (ret != 0) {
Serial.printf("error initializing SWD: %d\n", ret);
break;
}
ret = DetermineChipTypeAndSectorInfo(&state, NULL);
if (ret != 0) {
Serial.printf("failed to determine chip type: %d\n", ret);
break;
}
Serial.printf("chip type is %x\n", state.target_chip_type);
break;
default:
Serial.printf("unknown command '%c'\n", cmd);
break;
}
}
}
void loop1()
{
digitalWrite(LED_BUILTIN, 1);
delay(200);
digitalWrite(LED_BUILTIN, 0);
delay(200);
}
void loop1()
{
digitalWrite(LED_BUILTIN, 1);
delay(200);
digitalWrite(LED_BUILTIN, 0);
delay(200);
}