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-rw-r--r--laser-tag software/main.c7
-rw-r--r--laser-tag software/radio.c144
-rw-r--r--laser-tag software/radio.h3
3 files changed, 137 insertions, 17 deletions
diff --git a/laser-tag software/main.c b/laser-tag software/main.c
index cccd32f..9d2273e 100644
--- a/laser-tag software/main.c
+++ b/laser-tag software/main.c
@@ -52,6 +52,7 @@
static int current_image = 0;
static volatile int cue_next_image = 0;
static uint32_t laser_pulse_length = 32;
+static bool have_radio = false;
////////////////////////////
@@ -322,6 +323,8 @@ static void lptmr_call_back(void)
foo = (foo + 1) % 3;
}
LPUART_DRV_SendData(1, txBuff, laser_pulse_length);
+ /* pew the radio! */
+ radio_send_test();
}
/* countdown to turn off LED */
@@ -606,6 +609,7 @@ int main (void)
ret = radio_init();
debug_printf("radio_init returned %d\r\n", ret);
if (0 == ret) {
+ have_radio = true;
led(0x22, 0x00, 0x22);
}
@@ -614,6 +618,9 @@ int main (void)
/* We're done, everything else is triggered through interrupts */
for(;;) {
+ if (have_radio) {
+ radio_idle();
+ }
if (cue_next_image) {
int old_image = current_image;
current_image = (current_image + 1) % IMAGE_COUNT;
diff --git a/laser-tag software/radio.c b/laser-tag software/radio.c
index c78ec76..bbbb68a 100644
--- a/laser-tag software/radio.c
+++ b/laser-tag software/radio.c
@@ -11,6 +11,7 @@ static const gpio_output_pin_user_config_t pinReset = {
static const gpio_input_pin_user_config_t pinDIO0 = {
.pinName = GPIO_MAKE_PIN(GPIOC_IDX, 9),
+ .config.interrupt = kPortIntRisingEdge, //kPortIntLogicOne,
};
static const gpio_output_pin_user_config_t pinDIO2 = {
@@ -105,6 +106,7 @@ static const struct {
};
static spi_master_state_t spiState;
+static volatile bool irq_pending;
static void delay(uint32_t ms)
{
@@ -121,15 +123,20 @@ static spi_status_t SPI_Transfer(const uint8_t *tx, uint8_t *rx, size_t count)
rc = SPI_DRV_MasterTransfer(0, NULL, tx, rx, count);
if (rc != kStatus_SPI_Success) {
+ debug_printf("SPI_Transfer failed badly! %d\r\n", rc);
return rc;
}
int i, timeout = count * 2;
for (i = 0; i < timeout; ++i) {
- rc = SPI_DRV_MasterGetTransferStatus(0, NULL);
+ uint32_t count;
+ rc = SPI_DRV_MasterGetTransferStatus(0, &count);
if (rc == kStatus_SPI_Success) {
return rc;
}
+ debug_printf("%d bytes transfered so far\r\n", count);
}
+ debug_printf("SPI_Transfer timed out! %d\r\n", rc);
+ SPI_DRV_MasterAbortTransfer(0);
return rc;
}
@@ -149,15 +156,21 @@ static void write_reg(uint8_t reg, uint8_t val)
SPI_Transfer(tx, NULL, 2);
}
+void set_mode(uint8_t mode)
+{
+ uint8_t reg = read_reg(REG_OPMODE);
+
+ write_reg(REG_OPMODE, (reg & 0xE3) | mode);
+}
+
int radio_init()
{
PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 4, kPortMuxAlt2);
PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 5, kPortMuxAlt2);
PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 6, kPortMuxAlt2);
PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 7, kPortMuxAlt2);
- PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 8, kPortMuxAsGpio);
- //PORT_HAL_SetMuxMode(g_portBase[GPIOC_IDX], 10, kPortMuxAsGpio);
GPIO_DRV_OutputPinInit(&pinReset);
+ GPIO_DRV_InputPinInit(&pinDIO0);
//GPIO_DRV_OutputPinInit(&pinDIO2);
delay(1);
GPIO_DRV_WritePinOutput(pinReset.pinName, 0);
@@ -181,27 +194,126 @@ int radio_init()
for (i = 0; i < sizeof config / sizeof *config; ++i) {
write_reg(config[i].reg, config[i].val);
}
+ debug_printf("setting radio into receive mode...\r\n");
+ set_mode(RF_OPMODE_RECEIVER);
+ debug_printf("waiting for radio to enter receive mode...\r\n");
+ while (true) {
+ uint8_t reg = read_reg(REG_IRQFLAGS1);
+
+ debug_printf("IRQ Flags 1 = 0x%02X\r\n", reg);
+ if (reg & RF_IRQFLAGS1_MODEREADY) {
+ break;
+ }
+ }
+ debug_printf("radio receiving...\r\n");
+ SPI_DRV_MasterDeinit(0);
return 0;
}
-void set_mode(uint8_t mode)
+void radio_send_test()
{
- uint8_t reg = read_reg(REG_OPMODE);
+ static uint8_t pkt[] = {
+ 0x03, // data length
+ 0xff, 0xff, // to address
+ 0xff, 0xff, // from address
+ 'p', 'e', 'w', // data
+ };
+ int i;
- write_reg(REG_OPMODE, (reg & 0xE3) | mode);
+ SPI_DRV_MasterInit(0, &spiState);
+ uint32_t calculatedBaudRate;
+ SPI_DRV_MasterConfigureBus(0, &spiConfig, &calculatedBaudRate);
+ debug_printf("Putting radio in sandby\r\n");
+ set_mode(RF_OPMODE_STANDBY);
+ debug_printf("Waiting for sandby\r\n");
+ while (true) {
+ uint8_t reg = read_reg(REG_IRQFLAGS1);
+
+ debug_printf("IRQ Flags 1 = 0x%02X\r\n", reg);
+ if (reg & RF_IRQFLAGS1_MODEREADY) {
+ break;
+ }
+ }
+ //while ((read_reg(REG_IRQFLAGS1) & RF_IRQFLAGS1_MODEREADY) == 0);
+ debug_printf("Radio standing by\r\n");
+ write_reg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_00);
+ debug_printf("Filling FIFO with %d bytes\r\n", sizeof pkt);
+ for (i = 0; i < sizeof pkt; ++i) {
+ write_reg(REG_FIFO, pkt[i]);
+ }
+ debug_printf("Transmitting packet!\r\n");
+ set_mode(RF_OPMODE_TRANSMITTER);
+ SPI_DRV_MasterDeinit(0);
}
-void radio_test(void)
+void handle_rx() {
+ uint8_t pkt[66];
+ int i;
+
+ set_mode(RF_OPMODE_STANDBY);
+ debug_printf("RX: ");
+ for (i = 0; i < 66 && read_reg(REG_IRQFLAGS2) & RF_IRQFLAGS2_FIFONOTEMPTY;
+ ++i) {
+ pkt[i] = read_reg(REG_FIFO);
+ debug_printf("%02X ", pkt[i]);
+ }
+ debug_printf("\r\n");
+ if (read_reg(REG_IRQFLAGS2) & RF_IRQFLAGS2_PAYLOADREADY) {
+ debug_printf("RX interrupt still active!\r\n");
+ /* I guess try to clear it */
+ write_reg(REG_PACKETCONFIG2,
+ read_reg(REG_PACKETCONFIG2) | RF_PACKET2_RXRESTART);
+ /* Or empty manually? */
+ while (read_reg(REG_IRQFLAGS2) & RF_IRQFLAGS2_PAYLOADREADY) {
+ read_reg(REG_FIFO);
+ }
+ }
+ PORT_HAL_SetPinIntMode(g_portBase[GPIO_EXTRACT_PORT(pinDIO0.pinName)],
+ GPIO_EXTRACT_PIN(pinDIO0.pinName), kPortIntRisingEdge); // kPortIntLogicOne);
+ set_mode(RF_OPMODE_RECEIVER);
+}
+
+void handle_tx() {
+ debug_printf("Packet sent!\r\n");
+ set_mode(RF_OPMODE_STANDBY);
+ write_reg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_01);
+ PORT_HAL_SetPinIntMode(g_portBase[GPIO_EXTRACT_PORT(pinDIO0.pinName)],
+ GPIO_EXTRACT_PIN(pinDIO0.pinName), kPortIntRisingEdge); // kPortIntLogicOne);
+ set_mode(RF_OPMODE_RECEIVER);
+}
+
+void PORTC_IRQHandler(void)
{
- //write_reg(REG_DATAMODUL, RF_DATAMODUL_DATAMODE_CONTINUOUSNOBSYNC);
- set_mode(RF_OPMODE_TRANSMITTER);
- /*
- bool a = false;
- while (true) {
- GPIO_DRV_WritePinOutput(pinDIO2.pinName, a);
- a = !a;
- delay(100);
- }*/
+ /* silence! we'll get to you later */
+ PORT_HAL_SetPinIntMode(g_portBase[GPIO_EXTRACT_PORT(pinDIO0.pinName)],
+ GPIO_EXTRACT_PIN(pinDIO0.pinName), 0);
+ /* Clear interrupt flag.*/
+ PORT_HAL_ClearPortIntFlag(PORTC_BASE_PTR);
+ irq_pending = true;
+ //debug_printf("PORTC interrupt!\n");
+}
+
+void radio_idle() {
+ uint8_t reg;
+
+ if (!irq_pending) {
+ return;
+ }
+ debug_printf("Handling radio interrupt\r\n");
+ irq_pending = false;
+ SPI_DRV_MasterInit(0, &spiState);
+ uint32_t calculatedBaudRate;
+ SPI_DRV_MasterConfigureBus(0, &spiConfig, &calculatedBaudRate);
+ reg = read_reg(REG_IRQFLAGS2);
+ /* Do we have a packet? */
+ if (reg & RF_IRQFLAGS2_PAYLOADREADY) {
+ handle_rx();
+ }
+ /* Did we finish sending a packet? */
+ if (reg & RF_IRQFLAGS2_PACKETSENT) {
+ handle_tx();
+ }
+ SPI_DRV_MasterDeinit(0);
}
/* vim: set expandtab ts=4 sw=4: */
diff --git a/laser-tag software/radio.h b/laser-tag software/radio.h
index 3f999a0..ced6ebc 100644
--- a/laser-tag software/radio.h
+++ b/laser-tag software/radio.h
@@ -2,6 +2,7 @@
#define _RADIO_H_
int radio_init();
-void radio_test();
+void radio_send_test();
+void radio_idle();
#endif
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-10-16 13:31:20 +0000