Merge pull request #67 from arduino/rp2040_final

Adding support for Arduino RP2040 Nano Connect

Author: aentinger

CHANGELOG

@@ -1,5 +1,17 @@
 Arduino NINA-W102 firmware ?.?.? - ????.??.??
 
+Arduino NINA-W102 firmware 1.4.4 - 2021.04.13
+
+* Adding support for Arduino RP2040 Nano Connect (#64)
+
+Arduino NINA-W102 firmware 1.4.3 - 2021.01.29
+
+* Do not immediately close connection after 1 failed write (#62)
+
+Arduino NINA-W102 firmware 1.4.2 - 2021.01.28
+
+Port BearSSL + crypto integration to NINA (#57). This allows to offload BearSSL for Arduino IoT Cloud applications to the nina module, drastically saving on flash/RAM.
+
 Arduino NINA-W102 firmware 1.4.1 - 2020.08.17
 
 * Direct download of OTA binary to Nina storage and verifying both CRC and length (#53)

Makefile

@@ -14,6 +14,11 @@ CFLAGS += -DUNO_WIFI_REV2
 CPPFLAGS += -DUNO_WIFI_REV2
 endif
 
+ifeq ($(NANO_RP2040_CONNECT),1)
+CFLAGS += -DNANO_RP2040_CONNECT
+CPPFLAGS += -DNANO_RP2040_CONNECT
+endif
+
 include $(IDF_PATH)/make/project.mk
 
 firmware: all

arduino/cores/esp32/wiring_digital.c

@@ -33,6 +33,11 @@ void pinMode(uint32_t pin, uint32_t mode)
       gpio_set_direction((gpio_num_t)pin, GPIO_MODE_OUTPUT);
       gpio_set_pull_mode((gpio_num_t)pin, GPIO_FLOATING);
       break;
+
+    case INPUT_PULLUP:
+      gpio_set_direction((gpio_num_t)pin, GPIO_MODE_INPUT);
+      gpio_set_pull_mode((gpio_num_t)pin, GPIO_PULLUP_ONLY);
+      break;
   }
 
   PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[pin], PIN_FUNC_GPIO);

arduino/cores/esp32/wiring_digital.h

@@ -29,8 +29,9 @@ extern "C" {
 #define LOW  0x00
 #define HIGH 0x01
 
-#define INPUT  0x00
-#define OUTPUT 0x01
+#define INPUT        0x00
+#define OUTPUT       0x01
+#define INPUT_PULLUP 0x02
 
 extern void pinMode(uint32_t pin, uint32_t mode);
 

main/CommandHandler.cpp

@@ -36,7 +36,7 @@
 
 #include "esp_log.h"
 
-const char FIRMWARE_VERSION[6] = "1.4.4";
+const char FIRMWARE_VERSION[6] = "1.4.5";
 
 /*IPAddress*/uint32_t resolvedHostname;
 
@@ -1180,6 +1180,43 @@ int setAnalogWrite(const uint8_t command[], uint8_t response[])
   return 6;
 }
 
+int getDigitalRead(const uint8_t command[], uint8_t response[])
+{
+  uint8_t pin = command[4];
+
+  int const pin_status = digitalRead(pin);
+
+  response[2] = 1; // number of parameters
+  response[3] = 1; // parameter 1 length
+  response[4] = (uint8_t)pin_status;
+
+  return 6;
+}
+
+extern "C" {
+#include <driver/adc.h>
+}
+
+int getAnalogRead(const uint8_t command[], uint8_t response[])
+{
+  uint8_t adc_channel = command[4];
+
+  /* Initialize the ADC. */
+  adc_gpio_init(ADC_UNIT_1, (adc_channel_t)adc_channel);
+  /* Set maximum analog bit-width = 12 bit. */
+  adc1_config_width(ADC_WIDTH_BIT_12);
+  /* Configure channel attenuation. */
+  adc1_config_channel_atten((adc1_channel_t)adc_channel, ADC_ATTEN_DB_0);
+  /* Read the analog value from the pin. */
+  uint16_t const adc_raw = adc1_get_raw((adc1_channel_t)adc_channel);
+
+  response[2] = 1; // number of parameters
+  response[3] = sizeof(adc_raw); // parameter 1 length = 2 bytes
+  memcpy(&response[4], &adc_raw, sizeof(adc_raw));
+
+  return 7;
+}
+
 int writeFile(const uint8_t command[], uint8_t response[]) {
   char filename[32 + 1];
   size_t len;
@@ -1566,7 +1603,7 @@ const CommandHandlerType commandHandlers[] = {
   setEnt, NULL, NULL, NULL, sendDataTcp, getDataBufTcp, insertDataBuf, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 
   // 0x50 -> 0x5f
-  setPinMode, setDigitalWrite, setAnalogWrite,  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+  setPinMode, setDigitalWrite, setAnalogWrite, getDigitalRead, getAnalogRead, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 
   // 0x60 -> 0x6f
   writeFile, readFile, deleteFile, existsFile, downloadFile,  applyOTA, renameFile, downloadOTA, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
@@ -1578,9 +1615,11 @@ CommandHandlerClass::CommandHandlerClass()
 {
 }
 
+static const int GPIO_IRQ = 0;
+
 void CommandHandlerClass::begin()
 {
-  pinMode(0, OUTPUT);
+  pinMode(GPIO_IRQ, OUTPUT);
 
   for (int i = 0; i < MAX_SOCKETS; i++) {
     socketTypes[i] = 255;
@@ -1667,9 +1706,9 @@ void CommandHandlerClass::updateGpio0Pin()
   }
 
   if (available) {
-    digitalWrite(0, HIGH);
+    digitalWrite(GPIO_IRQ, HIGH);
   } else {
-    digitalWrite(0, LOW);
+    digitalWrite(GPIO_IRQ, LOW);
   }
 
   vTaskDelay(1);

main/sketch.ino.cpp

@@ -97,6 +97,13 @@ void setup() {
   pinMode(15, INPUT);
   pinMode(21, INPUT);
 
+#if defined(NANO_RP2040_CONNECT)
+  pinMode(26, OUTPUT);
+  pinMode(27, OUTPUT);
+  digitalWrite(26, HIGH);
+  digitalWrite(27, HIGH);
+#endif
+
   pinMode(5, INPUT);
   if (digitalRead(5) == LOW) {
     setupBluetooth();
@@ -111,8 +118,10 @@ void setupBluetooth() {
   periph_module_enable(PERIPH_UART1_MODULE);
   periph_module_enable(PERIPH_UHCI0_MODULE);
 
-#ifdef UNO_WIFI_REV2
+#if defined(UNO_WIFI_REV2)
   uart_set_pin(UART_NUM_1, 1, 3, 33, 0); // TX, RX, RTS, CTS
+#elif defined(NANO_RP2040_CONNECT)
+  uart_set_pin(UART_NUM_1, 1, 3, 33, 12); // TX, RX, RTS, CTS
 #else
   uart_set_pin(UART_NUM_1, 23, 12, 18, 5);
 #endif
@@ -121,7 +130,7 @@ void setupBluetooth() {
   esp_bt_controller_config_t btControllerConfig = BT_CONTROLLER_INIT_CONFIG_DEFAULT(); 
 
   btControllerConfig.hci_uart_no = UART_NUM_1;
-#ifdef UNO_WIFI_REV2
+#if defined(UNO_WIFI_REV2) || defined(NANO_RP2040_CONNECT)
   btControllerConfig.hci_uart_baudrate = 115200;
 #else
   btControllerConfig.hci_uart_baudrate = 912600;