spi test: set first 4096 bytes to 0
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@ -6,15 +6,30 @@
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// this is a very basic app to confirm that SPI is working, tested with board OSO-MISC-21-017 and a GD25Q16C Flash chip.
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// this is a very basic app to confirm that SPI is working, tested with board OSO-MISC-21-017 and a GD25Q16C Flash chip.
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static bool wait_for_flash_ready(void) {
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watch_set_pin_level(A3, false);
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bool ok = true;
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uint8_t read_status_response[1] = {0x00};
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do {
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ok = spi_flash_read_command(CMD_READ_STATUS, read_status_response, 1);
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} while (ok && (read_status_response[0] & 0x3) != 0);
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watch_set_pin_level(A3, true);
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return ok;
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}
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void app_init(void) {
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void app_init(void) {
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spi_flash_init();
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spi_flash_init();
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delay_ms(5000);
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uint8_t buf[3] = {1, 2, 3};
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uint8_t buf[256] = {0};
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for(int i = 1; i < 16; i++) {
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wait_for_flash_ready();
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watch_set_pin_level(A3, false);
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watch_set_pin_level(A3, false);
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spi_flash_command(CMD_ENABLE_WRITE);
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spi_flash_command(CMD_ENABLE_WRITE);
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watch_set_pin_level(A3, true);
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watch_set_pin_level(A3, true);
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// note that you will need to erase the sector to write different values later
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wait_for_flash_ready();
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spi_flash_write_data(0, buf, 3);
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spi_flash_write_data(i * 256, buf, 256);
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}
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}
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}
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void app_wake_from_backup(void) {
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void app_wake_from_backup(void) {
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@ -31,13 +46,20 @@ void app_wake_from_standby(void) {
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bool app_loop(void) {
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bool app_loop(void) {
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uint8_t buf[3] = {0};
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uint8_t buf[4100] = {0};
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printf("loop\n");
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// should print 1, 2, 3
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wait_for_flash_ready();
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spi_flash_read_data(0, buf, 3);
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spi_flash_read_data(0, buf, 4100);
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printf("data: %x, %x, %x\n", buf[0], buf[1], buf[2]);
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for(int i = 0; i < 4100; i++) {
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if (buf[i] > 0) {
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// should break at "byte 4096 is 255"
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printf(" byte %d is %d!\n", i, buf[i]);
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break;
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}
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}
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delay_ms(100);
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delay_ms(10000);
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return false;
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return false;
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}
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}
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@ -88,7 +88,9 @@ bool spi_flash_write_data(uint32_t address, uint8_t *data, uint32_t data_length)
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address_to_bytes(address, request + 1);
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address_to_bytes(address, request + 1);
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flash_enable();
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flash_enable();
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bool status = watch_spi_write(request, 4);
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bool status = watch_spi_write(request, 4);
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printf("status? ");
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if (status) {
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if (status) {
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printf("status! Writing %d bytes to %02x %02x %02x\n", data_length, request[1], request[2], request[3]);
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status = watch_spi_write(data, data_length);
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status = watch_spi_write(data, data_length);
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}
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}
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flash_disable();
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flash_disable();
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