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Code Issues Releases Activity

Got attitude working again. MPU6000 FIFO reading needs a bit of work.

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This commit is contained in:
James Cotton 2011-11-18 00:00:55 -06:00
parent 79730d5afa
commit 6d74e96c31
3 changed files with 26 additions and 58 deletions
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8
flight/Modules/Attitude/revolution/attitude.c
View File

@ -248,8 +248,8 @@ static int8_t updateSensors(AttitudeRawData * attitudeRaw)
// Not the swaping of channel orders
scaling = PIOS_BMA180_GetScale() / accel_samples;
attitudeRaw->accels[ATTITUDERAW_ACCELS_X] = accel_accum[0] * scaling;
attitudeRaw->accels[ATTITUDERAW_ACCELS_Y] = -accel_accum[1] * scaling;
attitudeRaw->accels[ATTITUDERAW_ACCELS_X] = accel_accum[1] * scaling;
attitudeRaw->accels[ATTITUDERAW_ACCELS_Y] = accel_accum[0] * scaling;
attitudeRaw->accels[ATTITUDERAW_ACCELS_Z] = -accel_accum[2] * scaling;
@ -269,8 +269,8 @@ static int8_t updateSensors(AttitudeRawData * attitudeRaw)
gyro_samples = count;
scaling = PIOS_MPU6000_GetScale() / gyro_samples;
attitudeRaw->gyros[ATTITUDERAW_GYROS_X] = -((float) gyro_accum[1]) * scaling;
attitudeRaw->gyros[ATTITUDERAW_GYROS_Y] = -((float) gyro_accum[0]) * scaling;
attitudeRaw->gyros[ATTITUDERAW_GYROS_X] = ((float) gyro_accum[1]) * scaling;
attitudeRaw->gyros[ATTITUDERAW_GYROS_Y] = ((float) gyro_accum[0]) * scaling;
attitudeRaw->gyros[ATTITUDERAW_GYROS_Z] = -((float) gyro_accum[2]) * scaling;
// From data sheet 35 deg C corresponds to -13200, and 280 LSB per C

75
flight/PiOS/STM32F4xx/pios_mpu6000.c
View File

@ -208,17 +208,9 @@ int32_t PIOS_MPU6000_ReadGyros(struct pios_mpu6000_data * data)
if(PIOS_MPU6000_ClaimBus() != 0)
return -1;
/*
if(PIOS_SPI_TransferBlock(pios_spi_gyro, &buf[0], &rec[0], sizeof(buf), NULL) < 0)
return -2;
*/
PIOS_SPI_TransferByte(pios_spi_gyro,(0x80 | PIOS_MPU6000_GYRO_X_OUT_MSB) ); // request byte
rec[1] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
rec[2] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
rec[3] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
rec[4] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
rec[5] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
rec[6] = PIOS_SPI_TransferByte(pios_spi_gyro,0 ); // receive response
PIOS_MPU6000_ReleaseBus();
@ -296,12 +288,10 @@ uint8_t PIOS_MPU6000_Test(void)
/**
* @brief IRQ Handler. Read all the data from onboard buffer
*/
#define MPU6000_MAX_BLOCK_READ 12
uint32_t mpu6000_irq = 0;
uint32_t mpu6000_count;
uint32_t mpu6000_fifo_full = 0;
uint8_t mpu6000_send_buf[1+MPU6000_MAX_BLOCK_READ * sizeof(struct pios_mpu6000_data)];
uint8_t mpu6000_rec_buf[1+MPU6000_MAX_BLOCK_READ * sizeof(struct pios_mpu6000_data)];
uint8_t mpu6000_last_read_count = 0;
uint32_t mpu6000_fails = 0;
@ -311,39 +301,20 @@ uint32_t mpu6000_transfer_size;
void PIOS_MPU6000_IRQHandler(void)
{
static uint32_t timeval;
mpu6000_interval_us = PIOS_DELAY_DiffuS(timeval);
timeval = PIOS_DELAY_GetRaw();
if(!mpu6000_configured)
return;
if(PIOS_MPU6000_ClaimBus() != 0)
return;
static uint32_t timeval;
mpu6000_interval_us = PIOS_DELAY_DiffuS(timeval);
timeval = PIOS_DELAY_GetRaw();
uint8_t mpu6000_send_buf[1+sizeof(struct pios_mpu6000_data)] = {PIOS_MPU6000_FIFO_REG | 0x80, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t mpu6000_rec_buf[1+sizeof(struct pios_mpu6000_data)];
// Get number of bytes in the fifo
mpu6000_send_buf[0] = PIOS_MPU6000_FIFO_CNT_MSB | 0x80;
mpu6000_send_buf[1] = mpu6000_send_buf[2] = 0;
if(PIOS_SPI_TransferBlock(pios_spi_gyro, &mpu6000_send_buf[0], &mpu6000_rec_buf[0], 3, NULL) < 0) {
PIOS_MPU6000_ReleaseBus();
return;
}
mpu6000_count = (mpu6000_rec_buf[1] << 8 | mpu6000_rec_buf[2]) / sizeof(struct pios_mpu6000_data);
mpu6000_last_read_count = mpu6000_count > MPU6000_MAX_BLOCK_READ ? MPU6000_MAX_BLOCK_READ : mpu6000_count;
if (mpu6000_count == 0) {
PIOS_MPU6000_ReleaseBus();
return;
}
mpu6000_last_read_count = 1;
mpu6000_send_buf[0] = PIOS_MPU6000_FIFO_REG | 0x80;
for(uint32_t i = 1; i < (1 + mpu6000_last_read_count * sizeof(struct pios_mpu6000_data)); i++)
mpu6000_send_buf[i] = 0;
mpu6000_transfer_size = 1+mpu6000_last_read_count * sizeof(struct pios_mpu6000_data);
if(PIOS_SPI_TransferBlock(pios_spi_gyro, &mpu6000_send_buf[0], &mpu6000_rec_buf[0], mpu6000_transfer_size, NULL) < 0) {
if(PIOS_SPI_TransferBlock(pios_spi_gyro, &mpu6000_send_buf[0], &mpu6000_rec_buf[0], sizeof(mpu6000_send_buf), NULL) < 0) {
PIOS_MPU6000_ReleaseBus();
mpu6000_fails++;
return;
@ -351,23 +322,19 @@ void PIOS_MPU6000_IRQHandler(void)
PIOS_MPU6000_ReleaseBus();
for(int32_t i = 0; i < mpu6000_last_read_count; i++) {
struct pios_mpu6000_data data;
if(fifoBuf_getFree(&pios_mpu6000_fifo) < sizeof(data)) {
mpu6000_fifo_full++;
return;
}
uint32_t start = 1 + i * sizeof(struct pios_mpu6000_data);
data.temperature = mpu6000_rec_buf[start] << 8 | mpu6000_rec_buf[start+1];
data.gyro_x = mpu6000_rec_buf[start+2] << 8 | mpu6000_rec_buf[start+3];
data.gyro_y = mpu6000_rec_buf[start+4] << 8 | mpu6000_rec_buf[start+5];
data.gyro_z = mpu6000_rec_buf[start+6] << 8 | mpu6000_rec_buf[start+7];
fifoBuf_putData(&pios_mpu6000_fifo, (uint8_t *) &data, sizeof(data));
struct pios_mpu6000_data data;
if(fifoBuf_getFree(&pios_mpu6000_fifo) < sizeof(data)) {
mpu6000_fifo_full++;
return;
}
data.temperature = mpu6000_rec_buf[1] << 8 | mpu6000_rec_buf[2];
data.gyro_x = mpu6000_rec_buf[3] << 8 | mpu6000_rec_buf[4];
data.gyro_y = mpu6000_rec_buf[5] << 8 | mpu6000_rec_buf[6];
data.gyro_z = mpu6000_rec_buf[7] << 8 | mpu6000_rec_buf[8];
fifoBuf_putData(&pios_mpu6000_fifo, (uint8_t *) &data, sizeof(data));
mpu6000_irq++;
mpu6000_time_us = PIOS_DELAY_DiffuS(timeval);

1
flight/Revolution/System/pios_board.c
View File

@ -910,6 +910,7 @@ void PIOS_Board_Init(void) {
PIOS_BMA180_Attach(pios_spi_accel_id);
PIOS_BMA180_Init(&pios_bma180_cfg);
/*
test_val = PIOS_HMC5883_Test();
*/