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author | Diego Ismirlian <dismirlian@gmail.com> | 2019-08-24 17:45:41 -0300 |
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committer | Diego Ismirlian <dismirlian@gmail.com> | 2019-08-24 17:45:41 -0300 |
commit | 7b2c61a676e024163057ec5ccc508a29ab3b9ed4 (patch) | |
tree | 5d1f5423a4e720d657681794ac81dc2a2004cbb0 /testhal/NRF52/NRF52832/I2C/main.c | |
parent | 81391097156ce2c9fc71c3350457522841e10095 (diff) | |
parent | e346e779339636f578536785014609e46866fb9c (diff) | |
download | ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.tar.gz ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.tar.bz2 ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.zip |
Merge branch 'master' of https://github.com/ChibiOS/ChibiOS-Contrib
Diffstat (limited to 'testhal/NRF52/NRF52832/I2C/main.c')
-rw-r--r-- | testhal/NRF52/NRF52832/I2C/main.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/testhal/NRF52/NRF52832/I2C/main.c b/testhal/NRF52/NRF52832/I2C/main.c new file mode 100644 index 0000000..88fb1e8 --- /dev/null +++ b/testhal/NRF52/NRF52832/I2C/main.c @@ -0,0 +1,165 @@ +/*
+ Copyright (C) 2015 Stephen Caudle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ This demo:
+ 1) Writes bytes to the EEPROM
+ 2) Reads the same bytes back
+ 3) Inverts the byte values
+ 4) Writes them
+ 5) Reads them back
+ */
+
+#include <stdlib.h>
+
+#include "ch.h"
+#include "hal.h"
+
+#define I2C_ADDR 0x50
+#define I2C_FAKE_ADDR 0x4C
+#define EEPROM_START_ADDR 0x00
+
+/*
+ * EEPROM thread.
+ */
+static THD_WORKING_AREA(PollEepromThreadWA, 1024);
+static THD_FUNCTION(PollEepromThread, arg) {
+
+ unsigned i;
+ uint8_t tx_data[6];
+ uint8_t rx_data[4];
+ msg_t status;
+
+ (void)arg;
+
+ chRegSetThreadName("PollEeprom");
+
+ /* set initial data to write */
+ tx_data[0] = EEPROM_START_ADDR;
+ tx_data[1] = EEPROM_START_ADDR;
+ tx_data[2] = 0xA0;
+ tx_data[3] = 0xA1;
+ tx_data[4] = 0xA2;
+ tx_data[5] = 0xA3;
+
+ while (true) {
+
+ /* write out initial data */
+ i2cAcquireBus(&I2CD1);
+ status = i2cMasterTransmitTimeout(&I2CD1, I2C_ADDR, tx_data, sizeof(tx_data), NULL, 0, TIME_INFINITE);
+ i2cReleaseBus(&I2CD1);
+ osalDbgCheck(MSG_OK == status);
+
+ /* read back inital data */
+ osalThreadSleepMilliseconds(2);
+ i2cAcquireBus(&I2CD1);
+ status = i2cMasterTransmitTimeout(&I2CD1, I2C_ADDR, tx_data, 2, rx_data, sizeof(rx_data), TIME_INFINITE);
+ i2cReleaseBus(&I2CD1);
+ osalDbgCheck(MSG_OK == status);
+
+ /* invert the data */
+ for (i = 2; i < sizeof(tx_data); i++)
+ tx_data[i] ^= 0xff;
+
+ /* write out inverted data */
+ osalThreadSleepMilliseconds(2);
+ i2cAcquireBus(&I2CD1);
+ status = i2cMasterTransmitTimeout(&I2CD1, I2C_ADDR, tx_data, sizeof(tx_data), NULL, 0, TIME_INFINITE);
+ i2cReleaseBus(&I2CD1);
+ osalDbgCheck(MSG_OK == status);
+
+ /* read back inverted data */
+ osalThreadSleepMilliseconds(2);
+ i2cAcquireBus(&I2CD1);
+ status = i2cMasterTransmitTimeout(&I2CD1, I2C_ADDR, tx_data, 2, rx_data, sizeof(rx_data), TIME_INFINITE);
+ i2cReleaseBus(&I2CD1);
+ osalDbgCheck(MSG_OK == status);
+
+ osalThreadSleepMilliseconds(TIME_INFINITE);
+ }
+}
+
+/*
+ * Fake polling thread.
+ */
+static THD_WORKING_AREA(PollFakeThreadWA, 256);
+static THD_FUNCTION(PollFakeThread, arg) {
+
+ (void)arg;
+
+ chRegSetThreadName("PollFake");
+ while (true) {
+
+ msg_t status;
+ uint8_t rx_data[2];
+ i2cflags_t errors;
+
+ i2cAcquireBus(&I2CD1);
+ status = i2cMasterReceiveTimeout(&I2CD1, I2C_FAKE_ADDR, rx_data, 2, TIME_MS2I(4));
+ i2cReleaseBus(&I2CD1);
+
+ if (status == MSG_RESET){
+ errors = i2cGetErrors(&I2CD1);
+ osalDbgCheck(I2C_ACK_FAILURE == errors);
+ }
+
+ palTogglePad(IOPORT1, LED1); /* on */
+ osalThreadSleepMilliseconds(1000);
+ }
+}
+
+/*
+ * I2C1 config.
+ */
+static const I2CConfig i2cfg = {
+ 100000,
+ I2C_SCL,
+ I2C_SDA,
+};
+
+/*
+ * Entry point, note, the main() function is already a thread in the system
+ * on entry.
+ */
+int main(void) {
+
+ halInit();
+ chSysInit();
+
+ i2cStart(&I2CD1, &i2cfg);
+
+ /* Create EEPROM thread. */
+ chThdCreateStatic(PollEepromThreadWA,
+ sizeof(PollEepromThreadWA),
+ NORMALPRIO,
+ PollEepromThread,
+ NULL);
+
+ /* Create not responding thread. */
+ chThdCreateStatic(PollFakeThreadWA,
+ sizeof(PollFakeThreadWA),
+ NORMALPRIO,
+ PollFakeThread,
+ NULL);
+
+ /* main loop handles LED */
+ while (true) {
+ palTogglePad(IOPORT1, LED2); /* on */
+ osalThreadSleepMilliseconds(500);
+ }
+
+ return 0;
+}
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