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bigbearishappybigbearishappy
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open the QSPI for Seeed XIAO BLE and add example code of it
how to compile the libmbed.a for QSPI: 1 git clone https://github.com/Seeed-Studio/ArduinoCore-mbed.git 2 git clone https://github.com/arduino/mbed-os.git 3 cd mbed-os/ 4 git apply /path/of/ArduinoCore-mbed/patch/0091-add-support-for-Seeed-XIAO-BLE.patch 5 git apply /path/of/ArduinoCore-mbed/patch/0092-open-the-QSPI-for-Seeed-XIAO-BLE.patch 6 cd ArduinoCore-mbed/ 7 ./mbed-os-to-arduino -r /absolute/path/of/mbed-os/ SEEED_XIAO_NRF52840_SENSE:SEEED_XIAO_NRF52840_SENSE
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‎libraries/Spi_Flash/example/flash_write_read/flash_write_read.ino

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/*
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Spi Flash write read demo
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This demo is based on Seeed XIAO BLE.
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The spi flash chip is P25Q16H(https://www.puyasemi.com/uploadfiles/2018/08/20180807152503253.pdf)
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*/
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#include "QSPIFBlockDevice.h"
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using namespace mbed;
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QSPIFBlockDevice root(QSPI_FLASH1_IO0, QSPI_FLASH1_IO1, QSPI_FLASH1_IO2, QSPI_FLASH1_IO3, QSPI_FLASH1_SCK, QSPI_FLASH1_CSN, QSPIF_POLARITY_MODE_1, MBED_CONF_QSPIF_QSPI_FREQ);
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void setup() {
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Serial.begin(115200);
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while (!Serial);
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Serial.println("init the spi flash...");
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int ret = root.init();
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if(ret) {
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Serial.print("init error. err code=");
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Serial.println(ret);
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}
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Serial.print("QSPIF BD size:");
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Serial.println(root.size());
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Serial.print("QSPIF read size:");
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Serial.println(root.get_read_size());
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Serial.print("QSPIF program size:");
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Serial.println(root.get_program_size());
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uint64_t sector_size_at_address_0 = root.get_erase_size(0);
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Serial.print("QSPIF erase size:");
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Serial.println(sector_size_at_address_0);
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// Init the buffer for write and read
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char *write_buffer = (char *) malloc(sector_size_at_address_0);
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char *read_buffer = (char *) malloc(sector_size_at_address_0);
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memset(write_buffer, 0x00, sector_size_at_address_0);
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memset(read_buffer, 0x00, sector_size_at_address_0);
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// Write the data to the spi flash
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sprintf(write_buffer, "Hello World!\n");
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Serial.println("writing data to spi flash...");
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root.erase(0, sector_size_at_address_0);
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root.program(write_buffer, 0, sector_size_at_address_0);
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// Read back what was stored
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Serial.println("Reading data from spi flash...");
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root.read(read_buffer, 0, sector_size_at_address_0);
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Serial.println(read_buffer);
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if(!memcmp(write_buffer, read_buffer, sector_size_at_address_0)){
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Serial.println("spi flash read write success");
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} else {
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Serial.println("spi flash read write failed");
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}
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root.deinit();
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}
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void loop() {
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}

‎patches/0092-open-the-QSPI-for-Seeed-XIAO-BLE.patch

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From 61180bcbb9bf8f9b139cff3a1fe625890e49fe2f Mon Sep 17 00:00:00 2001
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From: bbear <953308023@qq.com>
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Date: Wed, 26 Jan 2022 08:50:29 +0000
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Subject: [PATCH] open the QSPI for Seeed XIAO BLE
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---
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storage/blockdevice/COMPONENT_QSPIF/mbed_lib.json | 3 ++-
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.../TARGET_SEEED_XIAO_NRF52840_SENSE/PinNames.h | 15 +++++++++++++++
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targets/targets.json | 4 ----
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3 files changed, 17 insertions(+), 5 deletions(-)
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diff --git a/storage/blockdevice/COMPONENT_QSPIF/mbed_lib.json b/storage/blockdevice/COMPONENT_QSPIF/mbed_lib.json
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index ca461079..24c86d6e 100644
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--- a/storage/blockdevice/COMPONENT_QSPIF/mbed_lib.json
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+++ b/storage/blockdevice/COMPONENT_QSPIF/mbed_lib.json
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@@ -37,7 +37,8 @@
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"MCU_NRF52840": {
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"QSPI_FREQ": "32000000",
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"QSPI_MIN_READ_SIZE": "4",
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- "QSPI_MIN_PROG_SIZE": "4"
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+ "QSPI_MIN_PROG_SIZE": "4",
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+ "qspif.direct-reset": true
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},
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"MCU_PSOC6": {
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"QSPI_FREQ": "50000000"
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diff --git a/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_SEEED_XIAO_NRF52840_SENSE/PinNames.h b/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_SEEED_XIAO_NRF52840_SENSE/PinNames.h
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index e2b1cbad..3fc2080d 100644
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--- a/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_SEEED_XIAO_NRF52840_SENSE/PinNames.h
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+++ b/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_SEEED_XIAO_NRF52840_SENSE/PinNames.h
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@@ -179,6 +179,21 @@ typedef enum {
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I2C_SDA0 = p4,
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I2C_SCL0 = p5,
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+ /**** QSPI pins ****/
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+ QSPI1_IO0 = P0_20,
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+ QSPI1_IO1 = P0_24,
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+ QSPI1_IO2 = P0_22,
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+ QSPI1_IO3 = P0_23,
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+ QSPI1_SCK = P0_21,
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+ QSPI1_CSN = P0_25,
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+
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+ QSPI_FLASH1_IO0 = P0_20,
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+ QSPI_FLASH1_IO1 = P0_24,
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+ QSPI_FLASH1_IO2 = P0_22,
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+ QSPI_FLASH1_IO3 = P0_23,
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+ QSPI_FLASH1_SCK = P0_21,
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+ QSPI_FLASH1_CSN = P0_25,
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+
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#ifndef ARDUINO_ARCH_MBED
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// Digital Pins
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D0 = P0_2,
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diff --git a/targets/targets.json b/targets/targets.json
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index fff0bf72..725509ba 100644
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--- a/targets/targets.json
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+++ b/targets/targets.json
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@@ -6447,11 +6447,7 @@
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"features_add": [
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"STORAGE"
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],
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- "components_remove": [
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- "QSPIF"
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- ],
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"device_has_remove": [
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- "QSPI",
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"ITM"
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],
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"macros_add": [
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--
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2.20.1
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