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-rw-r--r--examples/test-serialusb.cpp135
-rw-r--r--libmaple/usb/usb.c6
-rw-r--r--libmaple/usb/usb.h1
-rw-r--r--notes/usb.txt2
-rw-r--r--wirish/usb_serial.cpp43
-rw-r--r--wirish/usb_serial.h7
6 files changed, 189 insertions, 5 deletions
diff --git a/examples/test-serialusb.cpp b/examples/test-serialusb.cpp
new file mode 100644
index 0000000..9d0a862
--- /dev/null
+++ b/examples/test-serialusb.cpp
@@ -0,0 +1,135 @@
+// Sample main.cpp file. Blinks an LED, sends a message out USART2
+// and turns on PWM on pin 2
+
+#include "wirish.h"
+#include "usb.h"
+
+#define LED_PIN 13
+#define BUT_PIN 38
+
+uint32 state = 0;
+#define QUICKPRINT 0
+#define BIGSTUFF 1
+#define NUMBERS 2
+#define SIMPLE 3
+#define ONOFF 4
+
+
+void setup()
+{
+ /* Set up the LED to blink */
+ pinMode(LED_PIN, OUTPUT);
+
+ /* Set up the Button */
+ pinMode(BUT_PIN, INPUT_PULLUP);
+
+ Serial2.begin(9600);
+ Serial2.println("Hello world! This is the debug channel.");
+}
+
+int toggle = 0;
+
+uint8 c1 = '-';
+
+void loop() {
+ toggle ^= 1;
+ digitalWrite(LED_PIN, toggle);
+ delay(1000);
+
+ if(digitalRead(BUT_PIN)) {
+ while(digitalRead(BUT_PIN)) {};
+ state++;
+ }
+
+ switch(state) {
+ case QUICKPRINT:
+ for(int i = 0; i<30; i++) {
+ usbSendBytes(&c1,1);
+ SerialUSB.print('.');
+ SerialUSB.print('|');
+ }
+ Serial2.println(SerialUSB.pending(),DEC);
+ SerialUSB.println();
+ break;
+ case BIGSTUFF:
+ SerialUSB.println("01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890");
+ SerialUSB.println((uint32)123456789,DEC);
+ SerialUSB.println(3.1415926535);
+ Serial2.println(SerialUSB.pending(),DEC);
+ break;
+ case NUMBERS:
+ SerialUSB.println("Numbers! -----------------------------");
+ Serial2.println("Numbers! -----------------------------");
+ SerialUSB.println('1');
+ Serial2.println('1');
+ SerialUSB.println(1,DEC);
+ Serial2.println(1,DEC);
+ SerialUSB.println(-1,DEC);
+ Serial2.println(-1,DEC);
+ SerialUSB.println(3.14159265);
+ Serial2.println(3.14159265);
+ SerialUSB.println(3.14159265,9);
+ Serial2.println(3.14159265,9);
+ SerialUSB.println(123456789,DEC);
+ Serial2.println(123456789,DEC);
+ SerialUSB.println(-123456789,DEC);
+ Serial2.println(-123456789,DEC);
+ SerialUSB.println(65535,HEX);
+ Serial2.println(65535,HEX);
+ break;
+ case SIMPLE:
+ Serial2.println("Trying write('a')");
+ SerialUSB.write('a');
+ Serial2.println("Trying write(\"b\")");
+ SerialUSB.write("b");
+ Serial2.println("Trying print('c')");
+ SerialUSB.print('c');
+ Serial2.println("Trying print(\"d\")");
+ SerialUSB.print("d");
+ Serial2.println("Trying print(\"efg\")");
+ SerialUSB.print("efg");
+ Serial2.println("Trying println(\"hij\\n\\r\")");
+ SerialUSB.print("hij\n\r");
+ SerialUSB.write(' ');
+ SerialUSB.println();
+ Serial2.println("Trying println(123456789,DEC)");
+ SerialUSB.println(123456789);
+ Serial2.println("Trying println(3.141592)");
+ SerialUSB.println(3.141592);
+ Serial2.println("Trying println(\"DONE\")");
+ SerialUSB.println("DONE");
+ break;
+ case ONOFF:
+ Serial2.println("Shutting down...");
+ SerialUSB.println("Shutting down...");
+ SerialUSB.end();
+ Serial2.println("Waiting 4seconds...");
+ delay(4000);
+ Serial2.println("Starting up...");
+ SerialUSB.begin();
+ SerialUSB.println("Hello World!");
+ Serial2.println("Waiting 4seconds...");
+ delay(4000);
+ state++;
+ break;
+ default:
+ state = 0;
+ }
+}
+
+// Force init to be called *first*, i.e. before static object allocation.
+// Otherwise, statically allocated object that need libmaple may fail.
+ __attribute__(( constructor )) void premain() {
+ init();
+}
+
+int main(void)
+{
+ setup();
+
+ while (1) {
+ loop();
+ }
+ return 0;
+}
+
diff --git a/libmaple/usb/usb.c b/libmaple/usb/usb.c
index 6c010d9..881c7f9 100644
--- a/libmaple/usb/usb.c
+++ b/libmaple/usb/usb.c
@@ -120,7 +120,13 @@ void setupUSB (void) {
/* initialize the usb application */
gpio_write_bit(USB_DISC_BANK,USB_DISC_PIN,0); /* present ourselves to the host */
USB_Init(); /* low level init routine provided by st lib */
+}
+void disableUSB (void) {
+ // These are just guesses about how to do this
+ // TODO: real disable function
+ usbDsbISR();
+ gpio_write_bit(USB_DISC_BANK,USB_DISC_PIN,1);
}
void usbSuspend(void) {
diff --git a/libmaple/usb/usb.h b/libmaple/usb/usb.h
index 66e820c..e0d4231 100644
--- a/libmaple/usb/usb.h
+++ b/libmaple/usb/usb.h
@@ -36,6 +36,7 @@ typedef enum
extern volatile uint32 bDeviceState;
void setupUSB(void);
+ void disableUSB(void);
void usbSuspend(void);
void usbResumeInit(void);
void usbResume(RESUME_STATE);
diff --git a/notes/usb.txt b/notes/usb.txt
index ade35cf..5e00354 100644
--- a/notes/usb.txt
+++ b/notes/usb.txt
@@ -1,3 +1,5 @@
+[NOTE: this is a long term proposal. The current implementation just does a
+2ms TIMEOUT]
SerialUSB Implementation
-------------------------------------------------------------------------------
diff --git a/wirish/usb_serial.cpp b/wirish/usb_serial.cpp
index f186dea..2effa3d 100644
--- a/wirish/usb_serial.cpp
+++ b/wirish/usb_serial.cpp
@@ -32,24 +32,53 @@
#include "wirish.h"
#include "usb.h"
+#define USB_TIMEOUT 2
+
USBSerial :: USBSerial(void) {
}
+void USBSerial::begin(void) {
+ setupUSB();
+}
+
+void USBSerial::end(void) {
+ disableUSB();
+}
+
void USBSerial::write(uint8 ch) {
- usbSendBytes(&ch, 1);
+ uint16 status = 0;
+ uint32 start = millis();
+ while(status == 0 && (millis() - start <= USB_TIMEOUT)) {
+ status = usbSendBytes(&ch, 1);
+ }
}
void USBSerial::write(const char *str) {
- uint32 len = strlen(str);
-
- usbSendBytes((uint8*)str, len);
+ uint32 len = strlen(str);
+ uint16 status = 0;
+ uint16 oldstatus = 0;
+ uint32 start = millis();
+ while(status < len && (millis() - start < USB_TIMEOUT)) {
+ status += usbSendBytes((uint8*)str+status, len-status);
+ if(oldstatus != status)
+ start = millis();
+ oldstatus = status;
+ }
}
void USBSerial::write(void *buf, uint32 size) {
if (!buf) {
return;
}
- usbSendBytes((uint8*)buf, size);
+ uint16 status = 0;
+ uint16 oldstatus = 0;
+ uint32 start = millis();
+ while(status < size && (millis() - start < USB_TIMEOUT)) {
+ status += usbSendBytes((uint8*)buf+status, size-status);
+ if(oldstatus != status)
+ start = millis();
+ oldstatus = status;
+ }
}
uint32 USBSerial::available(void) {
@@ -70,5 +99,9 @@ uint8 USBSerial::read(void) {
return ch;
}
+uint8 USBSerial::pending(void) {
+ return usbGetPending();
+}
+
USBSerial SerialUSB;
diff --git a/wirish/usb_serial.h b/wirish/usb_serial.h
index e1c61ff..abb362b 100644
--- a/wirish/usb_serial.h
+++ b/wirish/usb_serial.h
@@ -36,6 +36,9 @@ class USBSerial : public Print {
public:
USBSerial(void);
+ void begin(void);
+ void end(void);
+
uint32 available(void);
uint32 read(void *buf, uint32 len);
@@ -44,6 +47,10 @@ class USBSerial : public Print {
void write(uint8);
void write(const char *str);
void write(void *, uint32);
+
+ uint8 getRTS();
+ uint8 getDTR();
+ uint8 pending();
};
extern USBSerial SerialUSB;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 22:11:24 +0000