diff options
Diffstat (limited to 'openpicc/application')
| -rw-r--r-- | openpicc/application/cmd.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/openpicc/application/cmd.c b/openpicc/application/cmd.c index 7b370db..dba4e3e 100644 --- a/openpicc/application/cmd.c +++ b/openpicc/application/cmd.c @@ -1,6 +1,7 @@ #include <AT91SAM7.h> #include <FreeRTOS.h> #include <task.h> +#include <semphr.h> #include <queue.h> #include <USB-CDC.h> #include <board.h> @@ -22,6 +23,8 @@ xQueueHandle xCmdQueue; xTaskHandle xCmdTask; xTaskHandle xCmdRecvUsbTask; +xTaskHandle xFieldMeterTask; +xSemaphoreHandle xFieldMeterMutex; /* Whether to require a colon (':') be typed before long commands, similar to e.g. vi * This makes a distinction between long commands and short commands: long commands may be @@ -33,7 +36,7 @@ static const portBASE_TYPE USE_COLON_FOR_LONG_COMMANDS = 0; /* When not USE_COLON_FOR_LONG_COMMANDS then short commands will be recognized by including * their character in the string SHORT_COMMANDS * */ -static const char *SHORT_COMMANDS = "!pc+-l?hq9"; +static const char *SHORT_COMMANDS = "!pc+-l?hq9f"; /* Note that the long/short command distinction only applies to the USB serial console * */ @@ -121,6 +124,7 @@ void print_pio(void) static const AT91PS_SPI spi = AT91C_BASE_SPI; #define SPI_MAX_XFER_LEN 33 +void startstop_field_meter(void); extern volatile unsigned portLONG ulCriticalNesting; void prvExecCommand(u_int32_t cmd, portCHAR *args) { static int led = 0; @@ -283,6 +287,8 @@ void prvExecCommand(u_int32_t cmd, portCHAR *args) { case '!': tc_cdiv_sync_reset(); break; + case 'F': + startstop_field_meter(); case 'Q': ssc_rx_start(); while(0) { @@ -312,6 +318,7 @@ void prvExecCommand(u_int32_t cmd, portCHAR *args) { " * z 0/1- enable or disable tc_cdiv_sync\n\r" " * ! - reset tc_cdiv_sync\n\r" " * q - start rx\n\r" + " * f - start/stop field meter\n\r" " * d div- set tc_cdiv divider value 16, 32, 64, ...\n\r" " * 9 - reset CPU\n\r" " * ?,h - display this help screen\n\r" @@ -405,12 +412,53 @@ void vCmdRecvUsbCode(void *pvParameters) { } } +static portBASE_TYPE field_meter_enabled = 0; +#define FIELD_METER_WIDTH 80 +#define FIELD_METER_MAX_VALUE 160 +// A task to print the field strength as a bar graph +void vFieldMeter(void *pvParameters) { + (void) pvParameters; + char meter_string[FIELD_METER_WIDTH+2]; + + while(1) { + if(xSemaphoreTake(xFieldMeterMutex, portMAX_DELAY)) { + int i,ad_value = adc_get_field_strength(); + meter_string[0] = '\r'; + + for(i=0; i<FIELD_METER_WIDTH; i++) + meter_string[i+1] = + (ad_value / (FIELD_METER_MAX_VALUE/FIELD_METER_WIDTH) < i) ? + ' ' : '#'; + meter_string[i+1] = 0; + usb_print_string(meter_string); + + vTaskDelay(100*portTICK_RATE_MS); + if(field_meter_enabled == 1) xSemaphoreGive(xFieldMeterMutex); + } + } +} + +void startstop_field_meter(void) { + if(field_meter_enabled) { + field_meter_enabled = 0; + } else { + field_meter_enabled = 1; + xSemaphoreGive(xFieldMeterMutex); + } +} + portBASE_TYPE vCmdInit(void) { /* FIXME Maybe modify to use pointers? */ xCmdQueue = xQueueCreate( 10, sizeof(cmd_type) ); if(xCmdQueue == 0) { return 0; } + vSemaphoreCreateBinary( xFieldMeterMutex ); + if(xFieldMeterMutex == 0) { + return 0; + } + xSemaphoreTake(xFieldMeterMutex, portMAX_DELAY); + if(xTaskCreate(vCmdCode, (signed portCHAR *)"CMD", TASK_CMD_STACK, NULL, TASK_CMD_PRIORITY, &xCmdTask) != pdPASS) { @@ -422,5 +470,10 @@ portBASE_TYPE vCmdInit(void) { return 0; } + if(xTaskCreate(vFieldMeter, (signed portCHAR *)"FIELD METER", TASK_CMD_STACK, NULL, + TASK_CMD_PRIORITY, &xFieldMeterTask) != pdPASS) { + return 0; + } + return 1; } |