rename fe310 -> net

2 files changed, 227 insertions, 0 deletions

diff --git a/code/esp32/components/eos/include/net.h b/code/esp32/components/eos/include/net.h
new file mode 100644
index 0000000..21b12dc
--- /dev/null
+++ b/code/esp32/components/eos/include/net.h
@@ -0,0 +1,19 @@
+#include <stdint.h>
+
+#define EOS_FE310_CMD_FLAG_ONEW         0x10
+
+#define EOS_FE310_CMD_WIFI_CONNECT      1
+#define EOS_FE310_CMD_WIFI_DISCONNECT   2
+#define EOS_FE310_CMD_WIFI_SCAN         3
+#define EOS_FE310_CMD_WIFI_PKT          4
+#define EOS_FE310_CMD_MODEM_DATA        5
+#define EOS_FE310_CMD_MODEM_CALL        6
+
+#define EOS_FE310_MAX_CMD               8
+#define EOS_FE310_SIZE_Q                64
+#define EOS_FE310_SIZE_BUF              2048
+
+typedef void (*eos_fe310_fptr_t) (unsigned char, unsigned char *, uint16_t);
+
+void eos_fe310_init(void);
+int eos_fe310_send(unsigned char cmd, unsigned char *buffer, uint16_t len);
diff --git a/code/esp32/components/eos/net.c b/code/esp32/components/eos/net.c
new file mode 100644
index 0000000..e9e3af4
--- /dev/null
+++ b/code/esp32/components/eos/net.c
@@ -0,0 +1,208 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/semphr.h>
+// #include <freertos/heap_regions.h>
+
+#include <esp_system.h>
+#include <esp_event.h>
+#include <esp_event_loop.h>
+#include <esp_log.h>
+#include <esp_err.h>
+#include <esp_heap_caps.h>
+#include <driver/gpio.h>
+#include <driver/spi_slave.h>
+
+#include "eos.h"
+#include "msgq.h"
+#include "transport.h"
+#include "modem.h"
+#include "pcm.h"
+#include "fe310.h"
+
+static EOSMsgQ send_q;
+static EOSMsgItem send_q_array[EOS_FE310_SIZE_Q];
+
+#define SPI_GPIO_RTS        22
+#define SPI_GPIO_CTS        21
+#define SPI_GPIO_MOSI       23
+#define SPI_GPIO_MISO       19
+#define SPI_GPIO_SCLK       18
+#define SPI_GPIO_CS         5
+
+static SemaphoreHandle_t mutex;
+
+static const char *TAG = "EOS";
+
+static eos_fe310_fptr_t cmd_handler[EOS_FE310_MAX_CMD];
+
+static void bad_handler(unsigned char cmd, unsigned char *buffer, uint16_t len) {
+    ESP_LOGI(TAG, "FE310 RECV: bad handler: %d", cmd);
+}
+
+static void transceiver(void *pvParameters) {
+    int repeat = 0;
+    unsigned char cmd = 0;
+    unsigned char *buffer;
+    uint16_t len;
+    unsigned char *buf_send = heap_caps_malloc(EOS_FE310_SIZE_BUF, MALLOC_CAP_DMA);
+    unsigned char *buf_recv = heap_caps_malloc(EOS_FE310_SIZE_BUF, MALLOC_CAP_DMA);
+
+    spi_slave_transaction_t t;
+    memset(&t, 0, sizeof(t));
+
+    t.length = EOS_FE310_SIZE_BUF*8;
+    t.tx_buffer = buf_send;
+    t.rx_buffer = buf_recv;
+    for (;;) {
+        if (!repeat) {
+            xSemaphoreTake(mutex, portMAX_DELAY);
+
+            eos_msgq_pop(&send_q, &cmd, &buffer, &len);
+            if (cmd) {
+                buf_send[0] = ((cmd << 3) | (len >> 8)) & 0xFF;
+                buf_send[1] = len & 0xFF;
+                if (buffer) memcpy(buf_send + 2, buffer, len);
+            } else {
+                WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_RTS));
+                buf_send[0] = 0;
+                buf_send[1] = 0;
+            }
+
+            xSemaphoreGive(mutex);
+        }
+
+        memset(buf_recv, 0, EOS_FE310_SIZE_BUF);
+        spi_slave_transmit(HSPI_HOST, &t, portMAX_DELAY);
+        repeat = 0;
+        if (buf_recv[0] != 0) {
+            cmd = (buf_recv[0] >> 3);
+            len = ((buf_recv[0] & 0x07) << 8);
+            len |= buf_recv[1];
+            buffer = buf_recv + 2;
+            if (cmd & EOS_FE310_CMD_FLAG_ONEW) {
+                cmd &= ~EOS_FE310_CMD_FLAG_ONEW;
+                if (buf_send[0]) repeat = 1;
+            }
+            if (cmd < EOS_FE310_MAX_CMD) {
+                cmd_handler[cmd](cmd, buffer, len);
+            } else {
+                bad_handler(cmd, buffer, len);
+            }
+        } else {
+            // ESP_LOGI(TAG, "FE310 RECV NULL");
+        }
+        // vTaskDelay(5000 / portTICK_PERIOD_MS);
+    }
+}
+
+// Called after a transaction is queued and ready for pickup by master. We use this to set the handshake line high.
+static void _post_setup_cb(spi_slave_transaction_t *trans) {
+    WRITE_PERI_REG(GPIO_OUT_W1TS_REG, (1 << SPI_GPIO_CTS));
+}
+
+// Called after transaction is sent/received. We use this to set the handshake line low.
+static void _post_trans_cb(spi_slave_transaction_t *trans) {
+    WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_CTS));
+}
+
+static void fe310_wifi_connect_handler(unsigned char cmd, unsigned char *buffer, uint16_t size) {
+    eos_wifi_connect((char *)buffer, (char *)(buffer+strlen((char *)buffer)+1));
+}
+
+static void fe310_wifi_pkt_handler(unsigned char cmd, unsigned char *buffer, uint16_t size) {
+    EOSNetAddr addr;
+    size_t addr_len = sizeof(addr.host) + sizeof(addr.port);
+    
+    memcpy(addr.host, buffer, sizeof(addr.host));
+    memcpy(&addr.port, buffer+sizeof(addr.host), sizeof(addr.port));
+    eos_wifi_send(buffer+addr_len, size-addr_len, &addr);
+}
+
+static void fe310_modem_data_handler(unsigned char cmd, unsigned char *buffer, uint16_t size) {
+    eos_modem_write(buffer, size);
+}
+
+static void fe310_modem_call_handler(unsigned char cmd, unsigned char *buffer, uint16_t size) {
+    eos_pcm_call();
+}
+
+static void fe310_set_handler(unsigned char cmd, eos_fe310_fptr_t handler) {
+    cmd_handler[cmd] = handler;
+}
+
+void eos_fe310_init(void) {
+    esp_err_t ret;
+    
+    // Configuration for the handshake lines
+    gpio_config_t io_conf;
+    
+    io_conf.intr_type = GPIO_INTR_DISABLE;
+    io_conf.mode = GPIO_MODE_OUTPUT;
+    io_conf.pin_bit_mask = (1 << SPI_GPIO_CTS);
+    gpio_config(&io_conf);
+    WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_CTS));
+
+    io_conf.intr_type = GPIO_INTR_DISABLE;
+    io_conf.mode = GPIO_MODE_OUTPUT;
+    io_conf.pin_bit_mask = (1 << SPI_GPIO_RTS);
+    gpio_config(&io_conf);
+    WRITE_PERI_REG(GPIO_OUT_W1TC_REG, (1 << SPI_GPIO_RTS));
+
+    //Configuration for the SPI bus
+    spi_bus_config_t buscfg = {
+        .mosi_io_num = SPI_GPIO_MOSI,
+        .miso_io_num = SPI_GPIO_MISO,
+        .sclk_io_num = SPI_GPIO_SCLK
+    };
+
+    //Configuration for the SPI slave interface
+    spi_slave_interface_config_t slvcfg = {
+        .mode = 0,
+        .spics_io_num = SPI_GPIO_CS,
+        .queue_size = 2,
+        .flags = 0,
+        .post_setup_cb = _post_setup_cb,
+        .post_trans_cb = _post_trans_cb
+    };
+
+    //Enable pull-ups on SPI lines so we don't detect rogue pulses when no master is connected.
+    gpio_set_pull_mode(SPI_GPIO_MOSI, GPIO_PULLUP_ONLY);
+    gpio_set_pull_mode(SPI_GPIO_SCLK, GPIO_PULLUP_ONLY);
+    gpio_set_pull_mode(SPI_GPIO_CS, GPIO_PULLUP_ONLY);
+
+    int i;
+    for (i=0; i<EOS_FE310_MAX_CMD; i++) {
+        cmd_handler[i] = bad_handler;
+    }
+    
+    //Initialize SPI slave interface
+    ret=spi_slave_initialize(HSPI_HOST, &buscfg, &slvcfg, 1);
+    assert(ret==ESP_OK);
+
+    eos_msgq_init(&send_q, send_q_array, EOS_FE310_SIZE_Q);
+    mutex = xSemaphoreCreateBinary();
+    xSemaphoreGive(mutex);
+    xTaskCreate(&transceiver, "fe310_transceiver", 4096, NULL, EOS_PRIORITY_SPI, NULL);
+    // xTaskCreatePinnedToCore(&transceiver, "fe310_transceiver", 4096, NULL, EOS_PRIORITY_SPI, NULL, 1);
+    
+    fe310_set_handler(EOS_FE310_CMD_WIFI_CONNECT, fe310_wifi_connect_handler);
+    fe310_set_handler(EOS_FE310_CMD_WIFI_PKT, fe310_wifi_pkt_handler);
+    fe310_set_handler(EOS_FE310_CMD_MODEM_DATA, fe310_modem_data_handler);
+    fe310_set_handler(EOS_FE310_CMD_MODEM_CALL, fe310_modem_call_handler);
+}
+
+int eos_fe310_send(unsigned char cmd, unsigned char *buffer, uint16_t len) {
+    xSemaphoreTake(mutex, portMAX_DELAY);
+    WRITE_PERI_REG(GPIO_OUT_W1TS_REG, (1 << SPI_GPIO_RTS));
+    int rv = eos_msgq_push(&send_q, cmd, buffer, len);
+    xSemaphoreGive(mutex);
+    
+    return rv;
+}
+
+