add stdin for esp8266 and msp430 as well as preliminary shell app

9 files changed, 253 insertions, 95 deletions

diff --git a/src/app/bench/main.cc b/src/app/bench/main.cc
index cdbc00f..ee11a06 100644
--- a/src/app/bench/main.cc
+++ b/src/app/bench/main.cc
@@ -59,10 +59,5 @@ int main(void)
 
 	arch.idle_loop();
 
-	//uart_setup();
-	//uart_puts("\n" COL_YELLOW "dOS" COL_GREEN " > " COL_RESET);
-
-	//arch_idle_loop();
-
 	return 0;
 }
diff --git a/src/app/ledblink/main.cc b/src/app/ledblink/main.cc
index 8b0fe87..8d2e9d4 100644
--- a/src/app/ledblink/main.cc
+++ b/src/app/ledblink/main.cc
@@ -7,89 +7,6 @@
 #error makeflag timer_cycles=1 required
 #endif
 
-/*
-void check_command(unsigned char argc, char** argv)
-{
-	unsigned char i2c_rxbuf[16];
-	unsigned char i2c_txbuf[16];
-	float buf = 0;
-	int i;
-	if (!strcmp(argv[0], "i2c")) {
-		if (argc == 0) {
-			uart_puterr("Usage: i2c <on|off|detect|gettemp> [-u]\n");
-			return;
-		}
-		if (!strcmp(argv[1], "on")) {
-			if ((argc >= 2) && !strcmp(argv[2], "-u")) {
-				if (i2c_setup(1) < 0)
-					uart_puterr("Error initializing I²C: Line is busy\n");
-			} else {
-				if (i2c_setup(0) < 0)
-					uart_puterr("Error initializing I²C: Line is busy\n"
-							"Do you have hardware pullups on SDA/SCL?\n");
-			}
-		} else if (!strcmp(argv[1], "off")) {
-			uart_puterr("Error: not implemented yet\n");
-		} else if (!strcmp(argv[1], "detect")) {
-			i2c_scan();
-		} else if (!strcmp(argv[1], "tc74")) {
-			i2c_txbuf[0] = 0x00;
-			i2c_xmit(0x4d, 1, 1, i2c_txbuf, i2c_rxbuf);
-			uart_putint(i2c_rxbuf[0]);
-			uart_puts("°C\n");
-		} else if (!strcmp(argv[1], "lm75")) {
-			i2c_txbuf[0] = 0x00;
-			i2c_xmit(0x48, 1, 2, i2c_txbuf, i2c_rxbuf);
-			uart_putfloat(i2c_rxbuf[0] + (i2c_rxbuf[1] / 256.0));
-			uart_puts("°C\n");
-		}
-		else if (!strcmp(argv[1], "eepr")) {
-			i2c_rxbuf[0] = 0;
-			i2c_txbuf[0] = 0;
-			i2c_txbuf[1] = argv[2][0];
-			i2c_xmit(0x50, 2, 1, i2c_txbuf, i2c_rxbuf);
-			uart_putint(i2c_rxbuf[0]);
-			uart_puts("\n");
-		}
-		else if (!strcmp(argv[1], "eepw")) {
-			i2c_txbuf[0] = 0;
-			i2c_txbuf[1] = argv[2][0];
-			i2c_txbuf[2] = argv[3][0];
-			i2c_txbuf[3] = argv[3][1];
-			i2c_txbuf[4] = argv[3][2];
-			i2c_txbuf[5] = argv[3][3];
-			i2c_txbuf[6] = argv[3][4];
-			i2c_txbuf[7] = argv[3][5];
-			i2c_xmit(0x50, 8, 0, i2c_txbuf, i2c_rxbuf);
-		}
-	} else if (!strcmp(argv[0], "sensors")) {
-		for (i = 0; i < 32; i++) {
-			buf += adc_gettemp();
-			__delay_cycles(64000);
-		}
-		uart_puts("Temperature : ");
-		uart_putfloat(buf / 32);
-		uart_puts("°C avg / ");
-		uart_putfloat(adc_gettemp());
-		uart_puts("°C single\n    Voltage : ");
-		uart_putfloat(adc_getvcc());
-		uart_puts("V\n");
-	} else if (!strcmp(argv[0], "spi")) {
-		if (argc == 0) {
-			uart_puterr("Usage: spi <on|off|sharp>\n");
-			return;
-		}
-		if (!strcmp(argv[1], "on")) {
-			spi_setup();
-		}
-	} else if (!strcmp(argv[0], "help")) {
-		uart_puts("Supported commands: i2c sensors\n");
-	} else {
-		uart_puterr("Unknown command\n");
-	}
-}
-*/
-
 void loop(void)
 {
 	gpio.led_toggle(1);
@@ -114,10 +31,5 @@ int main(void)
 
 	arch.idle_loop();
 
-	//uart_setup();
-	//uart_puts("\n" COL_YELLOW "dOS" COL_GREEN " > " COL_RESET);
-
-	//arch_idle_loop();
-
 	return 0;
 }
diff --git a/src/app/shell/Makefile.inc b/src/app/shell/Makefile.inc
new file mode 100644
index 0000000..66d80ec
--- /dev/null
+++ b/src/app/shell/Makefile.inc
@@ -0,0 +1,2 @@
+arch_drivers += ,stdin
+wakeup ?= 1
diff --git a/src/app/shell/main.cc b/src/app/shell/main.cc
new file mode 100644
index 0000000..33896e4
--- /dev/null
+++ b/src/app/shell/main.cc
@@ -0,0 +1,124 @@
+#include "arch.h"
+#include "driver/gpio.h"
+#include "driver/stdout.h"
+#include "driver/stdin.h"
+#include "driver/uptime.h"
+
+/*
+void check_command(unsigned char argc, char** argv)
+{
+	unsigned char i2c_rxbuf[16];
+	unsigned char i2c_txbuf[16];
+	float buf = 0;
+	int i;
+	if (!strcmp(argv[0], "i2c")) {
+		if (argc == 0) {
+			uart_puterr("Usage: i2c <on|off|detect|gettemp> [-u]\n");
+			return;
+		}
+		if (!strcmp(argv[1], "on")) {
+			if ((argc >= 2) && !strcmp(argv[2], "-u")) {
+				if (i2c_setup(1) < 0)
+					uart_puterr("Error initializing I²C: Line is busy\n");
+			} else {
+				if (i2c_setup(0) < 0)
+					uart_puterr("Error initializing I²C: Line is busy\n"
+							"Do you have hardware pullups on SDA/SCL?\n");
+			}
+		} else if (!strcmp(argv[1], "off")) {
+			uart_puterr("Error: not implemented yet\n");
+		} else if (!strcmp(argv[1], "detect")) {
+			i2c_scan();
+		} else if (!strcmp(argv[1], "tc74")) {
+			i2c_txbuf[0] = 0x00;
+			i2c_xmit(0x4d, 1, 1, i2c_txbuf, i2c_rxbuf);
+			uart_putint(i2c_rxbuf[0]);
+			uart_puts("°C\n");
+		} else if (!strcmp(argv[1], "lm75")) {
+			i2c_txbuf[0] = 0x00;
+			i2c_xmit(0x48, 1, 2, i2c_txbuf, i2c_rxbuf);
+			uart_putfloat(i2c_rxbuf[0] + (i2c_rxbuf[1] / 256.0));
+			uart_puts("°C\n");
+		}
+		else if (!strcmp(argv[1], "eepr")) {
+			i2c_rxbuf[0] = 0;
+			i2c_txbuf[0] = 0;
+			i2c_txbuf[1] = argv[2][0];
+			i2c_xmit(0x50, 2, 1, i2c_txbuf, i2c_rxbuf);
+			uart_putint(i2c_rxbuf[0]);
+			uart_puts("\n");
+		}
+		else if (!strcmp(argv[1], "eepw")) {
+			i2c_txbuf[0] = 0;
+			i2c_txbuf[1] = argv[2][0];
+			i2c_txbuf[2] = argv[3][0];
+			i2c_txbuf[3] = argv[3][1];
+			i2c_txbuf[4] = argv[3][2];
+			i2c_txbuf[5] = argv[3][3];
+			i2c_txbuf[6] = argv[3][4];
+			i2c_txbuf[7] = argv[3][5];
+			i2c_xmit(0x50, 8, 0, i2c_txbuf, i2c_rxbuf);
+		}
+	} else if (!strcmp(argv[0], "sensors")) {
+		for (i = 0; i < 32; i++) {
+			buf += adc_gettemp();
+			__delay_cycles(64000);
+		}
+		uart_puts("Temperature : ");
+		uart_putfloat(buf / 32);
+		uart_puts("°C avg / ");
+		uart_putfloat(adc_gettemp());
+		uart_puts("°C single\n    Voltage : ");
+		uart_putfloat(adc_getvcc());
+		uart_puts("V\n");
+	} else if (!strcmp(argv[0], "spi")) {
+		if (argc == 0) {
+			uart_puterr("Usage: spi <on|off|sharp>\n");
+			return;
+		}
+		if (!strcmp(argv[1], "on")) {
+			spi_setup();
+		}
+	} else if (!strcmp(argv[0], "help")) {
+		uart_puts("Supported commands: i2c sensors\n");
+	} else {
+		uart_puterr("Unknown command\n");
+	}
+}
+*/
+
+void loop(void)
+{
+	gpio.led_toggle(1);
+}
+
+void wakeup(void)
+{
+	char key;
+	while (kin.hasKey()) {
+		key = kin.getKey();
+		if (key == '\r') {
+			kout.put('\n');
+		} else {
+			kout.put(key);
+		}
+	}
+}
+
+int main(void)
+{
+	arch.setup();
+	gpio.setup();
+	kout.setup();
+	kin.setup();
+
+	kout << "ohai > " << endl;;
+	kout << "ohai > " << endl;;
+	kout << "ohai > " << endl;;
+	kout << "ohai > " << endl;;
+	kout << "ohai > " << endl;;
+
+	arch.idle_loop();
+
+	return 0;
+}
diff --git a/src/arch/esp8266/Makefile.inc b/src/arch/esp8266/Makefile.inc
index 69a96f1..82755ce 100644
--- a/src/arch/esp8266/Makefile.inc
+++ b/src/arch/esp8266/Makefile.inc
@@ -29,6 +29,10 @@ ifeq (${esp8266_led2}, 1)
 	COMMON_FLAGS += -DLED_ON_GPIO16
 endif
 
+ifneq ($(findstring stdin,${arch_drivers}), )
+	TARGETS += src/arch/esp8266/driver/stdin.cc
+endif
+
 .cc.o:
 	${CXX} ${INCLUDES} ${COMMON_FLAGS} ${CXXFLAGS} -c -o $@ ${@:.o=.cc}
 	${OBJCOPY} --rename-section .text=.irom0.text --rename-section .literal=.irom0.literal $@
diff --git a/src/arch/esp8266/driver/stdin.cc b/src/arch/esp8266/driver/stdin.cc
new file mode 100644
index 0000000..7c7d2a7
--- /dev/null
+++ b/src/arch/esp8266/driver/stdin.cc
@@ -0,0 +1,77 @@
+#include "driver/stdin.h"
+#include "driver/gpio.h"
+extern "C" {
+#include "osapi.h"
+#include "user_interface.h"
+#include "gpio.h"
+#include "ets_sys.h"
+void ets_isr_attach(uint16_t idx, void func(), void *arg);
+void ets_isr_unmask(uint16_t idx);
+}
+
+#define USF  *((volatile uint32_t *)(0x60000000))
+#define USIR *((volatile uint32_t *)(0x60000004))
+#define USIS *((volatile uint32_t *)(0x60000008))
+#define USIE *((volatile uint32_t *)(0x6000000c))
+#define USIC *((volatile uint32_t *)(0x60000010))
+#define USS  *((volatile uint32_t *)(0x6000001c))
+#define USC1 *((volatile uint32_t *)(0x60000024))
+
+#define UIFF 0
+#define UIFE 1
+#define UIPE 2
+#define UIFR 3
+#define UIOF 4
+#define UIDSR 5
+#define UICTS 6
+#define UIBD 7
+#define UITO 8
+
+#define USRXC 0
+#define UCFFT 0
+#define UCTOT 24
+#define UCTOE 31
+
+
+#ifdef WITH_WAKEUP
+void wakeup();
+#endif
+
+void uart_isr()
+{
+	if (USIS & ((1 << UIFF) | (1 << UITO))) {
+		while ((USS >> USRXC) & 0x7f) {
+			kin.addKey(USF);
+		}
+	}
+	USIC = USIS;
+#ifdef WITH_WAKEUP
+	wakeup();
+#endif
+}
+
+void StandardInput::setup()
+{
+	//USC1 = (0x7f << UCFFT) | (0x02 << UCTOT) | (1 << UCTOE );
+	USIC = 0xffff;
+	USIE = (1 << UIFF) | (1 << UIFR) | (1 << UITO);
+	ETS_UART_INTR_ATTACH(&uart_isr, NULL);
+	ETS_UART_INTR_ENABLE();
+}
+
+bool StandardInput::hasKey()
+{
+	if (write_pos != read_pos) {
+		return true;
+	}
+	return false;
+}
+
+char StandardInput::getKey()
+{
+	char ret = buffer[read_pos++];
+	read_pos %= 8;
+	return ret;
+}
+
+StandardInput kin;
diff --git a/src/arch/msp430fr5969lp/Makefile.inc b/src/arch/msp430fr5969lp/Makefile.inc
index 05fcab1..bb91973 100644
--- a/src/arch/msp430fr5969lp/Makefile.inc
+++ b/src/arch/msp430fr5969lp/Makefile.inc
@@ -24,6 +24,10 @@ TARGETS += src/arch/msp430fr5969lp/driver/gpio.cc
 TARGETS += src/arch/msp430fr5969lp/driver/stdout.cc
 TARGETS += src/arch/msp430fr5969lp/driver/uptime.cc
 
+ifneq ($(findstring stdin,${arch_drivers}), )
+	TARGETS += src/arch/msp430fr5969lp/driver/stdin.cc
+endif
+
 ifneq ($(findstring i2c,${arch_drivers}), )
 	TARGETS += src/arch/msp430fr5969lp/driver/i2c.cc
 endif
diff --git a/src/arch/msp430fr5969lp/arch.cc b/src/arch/msp430fr5969lp/arch.cc
index 44a22c6..8281e66 100644
--- a/src/arch/msp430fr5969lp/arch.cc
+++ b/src/arch/msp430fr5969lp/arch.cc
@@ -63,10 +63,19 @@ void Arch::setup(void)
 	//P4OUT = 0;
 }
 
+#ifdef WITH_WAKEUP
+extern void wakeup();
+#endif
+
 void Arch::idle_loop(void)
 {
-	__eint();
-	while (1);
+	while (1) {
+		__eint();
+		__bis_SR_register(LPM0_bits);
+#ifdef WITH_WAKEUP
+		wakeup();
+#endif
+	}
 }
 
 Arch arch;
diff --git a/src/arch/msp430fr5969lp/driver/stdin.cc b/src/arch/msp430fr5969lp/driver/stdin.cc
new file mode 100644
index 0000000..cc6e586
--- /dev/null
+++ b/src/arch/msp430fr5969lp/driver/stdin.cc
@@ -0,0 +1,31 @@
+#include "driver/stdin.h"
+#include <msp430.h>
+
+void StandardInput::setup()
+{
+	UCA0IE |= UCRXIE;
+}
+
+bool StandardInput::hasKey()
+{
+	if (write_pos != read_pos) {
+		return true;
+	}
+	return false;
+}
+
+char StandardInput::getKey()
+{
+	char ret = buffer[read_pos++];
+	read_pos %= 8;
+	return ret;
+}
+
+StandardInput kin;
+
+__attribute__((interrupt(USCI_A0_VECTOR))) __attribute__((wakeup)) void handle_stdin()
+{
+	if (UCA0IFG & UCRXIFG) {
+		kin.addKey(UCA0RXBUF);
+	}
+}