nrf51822: Implement log module

3 files changed, 151 insertions, 2 deletions

diff --git a/platform/nrf51822/Makefile.platform b/platform/nrf51822/Makefile.platform
index e3600b6..13ff024 100644
--- a/platform/nrf51822/Makefile.platform
+++ b/platform/nrf51822/Makefile.platform
@@ -75,13 +75,18 @@ PLATFORM_LDFLAGS	= -T$(SDK_TEMPLATE_PATH)/gcc/$(LINKER_SCRIPT)	\
 			  -mcpu=$(CPU)
 
 PLATFORM_SOURCE_PATHS	= $(SDK_SOURCE_PATH)				\
-			  $(SDK_SOURCE_PATH)/simple_uart		\
+			  $(SDK_SOURCE_PATH)/app_common			\
 			  $(SDK_SOURCE_PATH)/nrf_delay			\
 			  $(SDK_TEMPLATE_PATH)				\
 			  $(SDK_TEMPLATE_PATH/gcc)			\
 			  $(PLATFORM_PATH)
 
-PLATFORM_SOURCE_FILES	= system_nrf51.c
+PLATFORM_SOURCE_FILES	= system_nrf51.c				\
+			  app_uart.c					\
+			  app_fifo.c					\
+			  app_gpiote.c					\
+			  nrf_delay.c					\
+			  log.c
 
 PLATFORM_ASM_PATHS	= $(SDK_TEMPLATE_PATH)/gcc
 
diff --git a/platform/nrf51822/log.c b/platform/nrf51822/log.c
new file mode 100644
index 0000000..1bcaf78
--- /dev/null
+++ b/platform/nrf51822/log.c
@@ -0,0 +1,115 @@
+/**
+ *  The MIT License (MIT)
+ *
+ *  Copyright (c) 2013 Paulo B. de Oliveira Filho <pauloborgesfilho@gmail.com>
+ *  Copyright (c) 2013 Claudio Takahasi <claudio.takahasi@gmail.com>
+ *  Copyright (c) 2013 João Paulo Rechi Vita <jprvita@gmail.com>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <app_uart.h>
+#include <nrf_delay.h>
+#include <boards.h>
+
+#include "nrf51822.h"
+#include "log.h"
+
+#define BUFFER_LEN			128
+#define READY				0
+#define BUSY				1
+
+static uint16_t pos;
+static uint16_t len;
+static uint8_t buffer[BUFFER_LEN];
+static uint8_t state;
+
+static __inline void tx_next_byte(void)
+{
+	if (pos == len) {
+		state = READY;
+		return;
+	}
+
+	app_uart_put(buffer[pos++]);
+}
+
+void log_print(const char *format, ...)
+{
+	va_list args;
+
+	while (state == BUSY);
+
+	va_start(args, format);
+	vsnprintf((char *) buffer, BUFFER_LEN, format, args);
+	va_end(args);
+
+	pos = 0;
+	len = strlen((char *) buffer);
+	state = BUSY;
+
+	tx_next_byte();
+}
+
+static void uart_evt_handler(app_uart_evt_t *p_app_uart_evt)
+{
+	switch (p_app_uart_evt->evt_type) {
+	case APP_UART_TX_EMPTY:
+		tx_next_byte();
+		break;
+
+	default:
+		break;
+	}
+}
+
+int16_t log_init(void)
+{
+	uint32_t err_code;
+
+	app_uart_comm_params_t params = {
+		RX_PIN_NUMBER,
+		TX_PIN_NUMBER,
+		RTS_PIN_NUMBER,
+		CTS_PIN_NUMBER,
+		APP_UART_FLOW_CONTROL_ENABLED,
+		false,
+		UART_BAUDRATE_BAUDRATE_Baud115200
+	};
+
+	APP_UART_INIT(&params, 0, 0, uart_evt_handler, IRQ_PRIORITY_MEDIUM,
+								err_code);
+
+	if (err_code != NRF_SUCCESS)
+		return -1;
+
+	state = READY;
+
+	/* Necessary to fully initialize the UART */
+	nrf_delay_ms(1);
+	log_print("\r\n");
+
+	return 0;
+}
\ No newline at end of file
diff --git a/platform/nrf51822/nrf51822.h b/platform/nrf51822/nrf51822.h
new file mode 100644
index 0000000..c1ccb90
--- /dev/null
+++ b/platform/nrf51822/nrf51822.h
@@ -0,0 +1,29 @@
+/**
+ *  The MIT License (MIT)
+ *
+ *  Copyright (c) 2013 Paulo B. de Oliveira Filho <pauloborgesfilho@gmail.com>
+ *  Copyright (c) 2013 Claudio Takahasi <claudio.takahasi@gmail.com>
+ *  Copyright (c) 2013 João Paulo Rechi Vita <jprvita@gmail.com>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+#define IRQ_PRIORITY_HIGH		0
+#define IRQ_PRIORITY_MEDIUM		1
+#define IRQ_PRIORITY_LOW		2